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There are a lot of different types of pollution but the one that I'm going to talk about is ocean pollution. This affects the animals because of how there are a lot of plastic bags and cups all around the ocean which causes the animals to not have clean water to survive. It also affects human health because of how the air is being consumed of toxic air and people are pretty soon going to not have oxygen left
http://www.conserve-energy-future.com/causes-and-effects-of-ocean-pollution.php
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Air pollution affects air, and human health. Air pollution give us cardiopulmonary disease. The diseases caused by air pollution increases medicine use. Air pollution also causes acid rain.

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There are many different types of pollution but one of the most common types of pollution is water, air, and plastic pollution. The pollutions can kill plants, poison soils and water, kill animals, and if continually affected it can cause cancer or a respiratory disease. This problem was in effect for a while now but we haven't been doing much about it. This can cause other  environmental issues like acid rain, oil spilled, and urban runoff. We need to address this issue but nobody is paying attention to it
http://www.conserve-energy-future.com/15-current-environmental-problems.php

https://www.worldwildlife.org/threats/pollution

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The environmental issues i choose was waste. we make huge holes in the ground, sometimes specially dug, for trash/waste that may not rot and stink or create methane gas. Methane gas can be explosive and contributes to greenhouse effect. Burning waste is not much better. When we burn waste it also makes produces a toxic waste such as dioxins

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The environmental issues i choose was waste. we make huge holes in the ground, sometimes specially dug, for trash/waste that may not rot and stink or create methane gas. Methane gas can be explosive and contributes to greenhouse effect. Burning waste is not much better. When we burn waste it also makes produces a toxic waste such as dioxins

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Pollution is land, water, and air is unsafe to use. Toxic pollution affects more than 200 million people worldwide. Americans produce 226.8 million kilograms of waste they put into landfills. 40 percent of food produced is trashed each year. Eating the food you have and recycling can help the waste not build up on land, air, or water. https://www.livescience.com/22728-pollution-facts.html

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Pollution is land, water, and air is unsafe to use. Toxic pollution affects more than 200 million people worldwide. Americans produce 226.8 million kilograms of waste they put into landfills. 40 percent of food produced is trashed each year. Eating the food you have and recycling can help the waste not build up on land, air, or water. https://www.livescience.com/22728-pollution-facts.html

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Energy Conservation are efforts to reduce the consumption of energy. This is a problem because so many people are unaware of the problem, so for example people are leaving lights on or just running things for too long. This might not be a problem if one person did it but millions and millions of people are doing it it becomes a huge problem.

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Environmental Degradation has been plaguing this Earth for hundreds of years, yet we have only caught onto it recently.  Since humans have started expanding, resources have been at our disposal.  But, because of our everlasting expansion, we have used resources beyond natural replenishing rate.  As of now, we are in "debt" and have to create/use alternate resources because we have used them extensively.  We failed to realize that we are destroying the Earth and we just keep consuming without growing or giving back.  Cutting down trees, destroying habitats, and killing animals.  These are just some of the examples of the horrible things we have done.  Taking over the world is what we've done and it's too late to fix it.  

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Environmental Degradation has been plaguing this Earth for hundreds of years, yet we have only caught onto it recently.  Since humans have started expanding, resources have been at our disposal.  But, because of our everlasting expansion, we have used resources beyond natural replenishing rate.  As of now, we are in "debt" and have to create/use alternate resources because we have used them extensively.  We failed to realize that we are destroying the Earth and we just keep consuming without growing or giving back.  Cutting down trees, destroying habitats, and killing animals.  These are just some of the examples of the horrible things we have done.  Taking over the world is what we've done and it's too late to fix it.  

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http://www.conserve-energy-future.com/causes-and-effects-of-environmental-degradation.php

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Many people become vegetarians because they think that it is better for the environment but this is, somewhat, a lie. A research held at CMU shows that lettuce is three times worse in greenhouse gas emissions than bacon. Many vegetables require more resources per calories than most meats. Also, you need a lot of vegetables to replace the amount of energy you can get from meat and being low on energy can mean less you in the long run. This means that if you want to get an acceptable amount of energy from vegetables you will need to eat more of them which causes use of much more resources. The research also shows that becoming vegetarian increases energy use by 43%, our water footprint by 16%, and emissions by 11%. Overall, becoming a vegetarian can increase global warming, waste more energy, and use up more resources which can harm humans.

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Update: This story received criticism from our readers. Since it was originally published, we've updated the article with some new information and context (see below).

Advocates of vegetarianism - including everybody's favourite Governator - regularly point out how how harmful human consumption of meat is to the environment, but is opting for a fully vegetable-based, meat-free diet a viable way to cut down on energy use and greenhouse gas emissions?

Nope - according to a new study by scientists in the US - or, at least, it's not that simple. Researchers at Carnegie Mellon University (CMU) say that adopting the US Department of Agriculture's (USDA) current recommendations that people incorporate more fruits, vegetables, dairy and seafood in their diet would actually be worse for the environment than what Americans currently eat.

"Eating lettuce is over three times worse in greenhouse gas emissions than eating bacon," said Paul Fischbeck, one of the researchers. "Lots of common vegetables require more resources per calorie than you would think. Eggplant, celery and cucumbers look particularly bad when compared to pork or chicken."

If these findings seem surprising in light of what we know about the impact of meat on the environment, you're probably not alone. You're also not wrong - meat production does take a high toll on the environment.

But what we need to bear in mind is that the energy content of meat is also high, especially when compared to the energy content of many vegetables, which is why going on a salad diet is great for your waistline. Consuming less energy content means less you in the long run.

But what if you don't want to lose weight? What if you just want to replace the same amount of energy you get from meat with energy from vegetables? Well, then, to put it very simply, you need to eat a lot of vegetables. And when you contrast meat and vegetables on their impact per calorie as opposed to by weight, veggies suddenly don't look quite so environmentally friendly.

In the study, which was funded by CMU's Steinbrenner Institute for Environmental Education and Research and the sustainability-focused Colcom Foundation, the researchers examined three different scenarios in terms of their energy and water use, and the greenhouse gas emissions that stem from the growing, processing, and transporting of food involved.

In the first scenario, the impact of food production on the environment could be lessened if people simply ate less of what they already do. Shifting from the current average US diet - which is particularly high in calories - to a reduced calorie intake designed to achieve 'normal' body weights for the population, rather than perpetuating the two thirds that are currently obese, would result in a 9 percent decrease in energy use, water footprint, and emissions.

However, in a second scenario, keeping calorie levels the same but adjusting the foods eaten to incorporate USDA recommendations that people eat more vegetables, fruits, dairy, and seafood would see energy use increase by 43 percent, with the water footprint increasing by 16 percent and emissions by 11 percent.

And the third scenario - reducing calories while also shifting to the recommended foods - takes a greater toll on the environment too, with increases in energy use, water footprint, and gas emissions of 38 percent, 10 percent, and 6 percent respectively.

The researchers acknowledge that their findings may be somewhat surprising in light of the zeitgeist over meat's impact. "These perhaps counterintuitive results are primarily due to USDA recommendations for greater caloric intake of fruits, vegetables, dairy, and fish/seafood, which have relatively high resource use and emissions per calorie," they write in Environment Systems & Decisions.

But controversial as the findings may sound, comparing the respective impact of different foods based on their calorie content isn't new or radical.

"If you stop eating beef, you can't replace a kilogram of it, which has 2,280 calories, with a kilogram of broccoli, at 340 calories. You have to replace it with 6.7 kilograms of broccoli," Tamar Haspel wrote last year for the Washington Post. "Calories are the great equaliser, and it makes sense to use them as the basis of the calculation."

Inevitably, producing far greater amounts of foods like broccoli to compensate for the calories lost from meat and other high-energy food sources involves larger amounts of energy, water and emissions than any simple kilo-for-kilo comparison of environmental footprint allows. Take a look at the graphic here to see how the impact of foods is reordered when they're ranked by calorie content as opposed to by weight.

"There's a complex relationship between diet and the environment," said Michelle Tom, one of the team. "What is good for us health-wise isn't always what's best for the environment. That's important for public officials to know and for them to be cognisant of these tradeoffs as they develop or continue to develop dietary guidelines in the future."

Update: The researchers did not find that vegetarians or vegetarianism are harmful to the environment, or that producing vegetables is more harmful to the environment than producing meat.

What they found, in light of the data they examined, is that producing some vegetables and other foods results in high use of natural resources - and that eating more of those foods (as recommended for health by the USDA) in two particular scenarios results in higher energy use, blue water footprint and greenhouse gas emissions.

One limitation of only looking at the per-calorie level of resources and emissions in foods, however, is that it doesn't necessarily reflect what people actually eat. As others have pointed out, some foods that require a lot of natural resources to produce - such as lettuce, for example - would likely never constitute the basis of a diet, vegetarian or otherwise, since they're so low in calories.

Other research suggests that eating less meat is a good thing for the environment. One previous study found that following a lacto-ovo vegetarian diet (no meat, fish, or poultry) would result in a 33 percent decrease in greenhouse gas emissions, and vegan diets go even further, with a 53 percent decrease in emissions.

But in terms of the Carnegie Mellon University study, what the researchers are saying, to borrow Hilary Hanson's phrase at The Huffington Post, is that "not every plant product is more environmentally friendly than every meat product." (Original emphasis.)

This point is also well expressed (along with much other commentary) in this Washington Post article by Tamar Haspel.

"You can't lump all vegetables together and say they're good. You can't lump all meat together and say it's bad," Paul Fischbeck, one of the researchers, explained to Hanson, in reference to food's impact on the environment. "My bottom line is that there are no simple answers to complex problems. Diet and the environmental impact of agriculture ... is not a simple problem."

The importance of research like this is how it helps people to think about the extent to which our individual diets affect the environment and the resources around us. This is especially relevant right now, with the planet under more stress than ever, due to the size of countries' populations, environmental damage resulting from climate change, and competition for limited resources. It also highlights how environmental benefits and health benefits can sometimes clash.

But, standing back, it's clear from the competing (and sometimes controversial) findings of studies like this that scientists have yet to find the best way of measuring the impact of one particular type of diet compared to another. Hopefully, with more research, this is something that can be figured out, and we can produce enough sustainable and healthy food to feed people everywhere.

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Vegetarian And 'Healthy' Diets May Actually Be Worse For The Environment, Study Finds

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Update: This story received criticism from our readers.

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Unfiltered water can contain lead, arsenic, and bacteria. Drinking unfiltered water can cause cancers, high blood pressure, and can impair the mental health and physical development of children. All in all unfiltered tap water can cause many problems to the human body.

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Land use is a very important topic. It is basically the term to describe things like destruction of habitats. It can lead to the extinction of species. It is a very controversial topic that can lead to a bad future.

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Clean water is becoming really rare. Water is becoming an economic and political issue as the human population fight for it. One of the options to stop this problem is by using the process of desalinization. Industrial development is filling our water sources with toxic pollutants which are a major threat to human health.
http://www.conserve-energy-future.com/15-current-environmental-problems.php

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Rescource depletion is the depletion of natural rescources faster than it can be made again. One of the most important things being depleted is freshwater. According to an article on "The World Counts"(http://www.theworldcounts.com/stories/consequences_of_depletion_of_natural_resources) water, oil, and forests are important things that are beggining to run out. If any of these things run out, espicially water, we won't be able to survive.
We need water to live, forests to make air, and oil for

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Air pollution is harming the environment by accumulating smog and toxic particles into the atmosphere. One example of air pollution is acid rain. Acid rain affects ponds and soils while also damaging forests. Not only does air pollution affect the environment but it also affects human health greatly. Humans have a high risk of inhaling these toxic fumes from acid rain or smog and get serious medical conditions. Some symptoms include irritation of the eyes, nose and throat, weezing and coughing, irritation of existing lung and heart problems, and risk of heart problems. Most importantly, air pollution can cause cancer to humans.
http://www.mass.gov/eea/docs/dep/air/aq/health-and-env-effects-air-pollutions.pdf

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I think our population will become an issue. I think we are and will continue to overpopulate. If we overpopulate then our vital resources will eventually run out and everything will be limited. It will have a big effect on the human race and it will not be good. Thousands of people are born everyday and our population is growing rapidly.

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I think our population will become an issue. I think we are and will continue to overpopulate. If we overpopulate then our vital resources will eventually run out and everything will be limited. It will have a big effect on the human race and it will not be good. Thousands of people are born everyday and our population is growing rapidly.

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http://www.conserve-energy-future.com/causes-effects-solutions-of-overpopulation.php

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Acid rain is a major environmental issue. Acid rain is any for of precipitation with acidic components. Sulfur dioxide and nitrogen oxide are released into the atmosphere. Then these components are moved through wind and air currents. SO₂ and NOX  are caused by the burning of fossil fuel to generate electricity. Some forms of acid rain include wet deposition and dry deposition. Wet deposition is when nitric and sulfuric acids form with rain snow fog or hail. SO₂ and NOx are harmful to human health, although walking or swimming in acid rain is not at all dangerous.https://www.epa.gov/acidrain/what-acid-rain

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Overpopulation is currently a huge issue in our world.Like the source said(http://www.conserve-energy-future.com/15-current-environmental-problems.php)the population is reaching unsustainable levels as we face shortages of resources like water,fuel,and food.With the population getting as big as it is there are population explosion in less developed and developing countries.They are using up the already scarce resources.They're having to use intensive agriculture to produce food which damages the environment even further through use of chemical fertilizer,pesticides,and of course insecticides.

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As ridiculous as it sounds, oil is a substance that is completely out of control. People are literally swimming in the ocean in which contains oil. The reason I chose this is because a topic such as "Overpopulation" is absurd, as this is the same (or similar) statement as telling a male and female adult to not have sex, which can be essential as a physical need to survive.

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Human overpopulation is the problem where people keep repopulating and repopulating so the earth is getting overrun with people. Because of this, we are running out of the supplies for the world. Eventually, if we keep up with the reproduction at this rate, there won't be enough food and water or clothes for all the people. And because of all the people coming the countries will be over run and there won't be any room.
https://en.wikipedia.org/wiki/Human_overpopulation

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Waste disposal is a major problem all over the world. According to "Conserve-Energy-Future.com," "Developed countries are notorious  for producing an excessive amount of waste or garbage and dumping their waste in the oceans, and less developed countries." Bigger countries have a bigger amount of trash being disposed a day. Waste is a huge problem because it is being dumped all over the world.http://www.conserve-energy-future.com/15-current-environmental-problems.php

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Global warming may not seem very bad, but over the years the temperature can cause many problems. Even though a few degrees may not seem like much over time it becomes drastic.
https://www.nrdc.org/stories/are-effects-global-warming-really-bad

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Acid rain is any type or precipitation that has acidic chemicals.  Acid rain forms when sulfur dioxide and nitrogen oxygen are released into the atmosphere from burning fossil fuels. This can cause lakes, streams, and the ocean to turn acidic, which can make it harder to find clean water to drink.
Source: https://www.epa.gov/acidrain/what-acid-rain

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At this point in time there are so many people in the world. More and more people are starting to drive everyday. This means that the roads are starting to be covered which means that it takes forever to get anywhere. The smog from all the transportation that we have for the growing population is getting worse and worse every day.   It has caused our air to be even less healthy. Causing there to be a slight risk to the human race.
Source: http://www.reimaginerpe.org/node/342

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An Invasive species is any species that is not from the region it currently is, like Kudzu and locusts, and often destroy the environment and kill animals who aren't used to them being there.

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environmental issues consists of climate change, pollution, and environmental degradation, environmental protection is the act of protecting the natural environment. Climate disasters are on the rise. Around 70 percent of disasters are now climate related – up from around 50 percent from two decades ago.
source:
https://en.wikipedia.org/wiki/Environmental_issue

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Deforestation is the cause of humans wanting to make more for themselves. For example to make more land for urban housing, or for oil. This issue is taking place all over the world but mainly in places like Brazil, Indonesia, and Thailand (there are a few more). Deforestation is also considered to be the leading cause of climate change. The carbon cycle is also disrupted due to Deforestation. Humans are not the only ones affected many species lose their homes as well, the water cycle is disrupted, and the soil on Earth's soil is being eroded.
Sorce: https://www.livescience.com/27692-deforestation.html

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Climate change affects humans, and many other species. This is caused by humans, through the burning of fossil fuels. Also, from the release of harmful gases by industries. It has many effects including, melting of polar ice, change in season, , occurrences of new diseases and change in weather overall.
Source: http://www.conserve-energy-future.com/15-current-environmental-problems.php

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Plastic bags are often released into the world and reach the oceans. This affects the amount of fish we have to eat. Toxins in the plastic enter the fish and is very dangerous for humans to eat.  Plastic is non-biodegradable, so it's there forever. If a plastic bag is released and never found again, then that plastic bag will be there forever.

Source: https://serc.carleton.edu/NAGTWorkshops/health/case_studies/plastics.html

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when you add a chemical or substance that is harmful into the air. There are 6 types of pollution in the air: air pollution, water pollution,  land pollution, noise pollution, light pollution, and plastic pollution. Although environmental pollution can be caused by natural events such as forest fire and active volcanoes, it is usually spread by factories and cars.

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Overpopulation is an important issue because we, as humans, are reaching a shortage of food. With the rapid increase of people is causing us to reach a level of unsustainability that has a huge affect on smaller and less developed countries. The increase of farming in order to make enough food is also dangerous due to pesticides, insecticides, and chemical fertilizers.

Source:http://www.conserve-energy-future.com/15-current-environmental-problems.php