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This picture represents evolution by giving a visual sequence showing how we as humans evolved from ape-like ancestors. Each organism in the picture represents a small change of traits that have been developed and pass down over the generations. You can see the subtle changes in things like posture, body size and headships. It also shows how these organisms adapted overtime to better survive in their environments. It also reflects a key part of evolution know as "descent with modifications." Not only have humans evolved, but every species once came from a different ancestor that inherited traits in order to survive. This process, that is still on going, helps to explain the diversity we see on Earth today.

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Naegleria Fowleri is a protist most commonly found in warm freshwater lakes, rivers and hot springs. You've probably heard of it through it's more common name "the brain eating amoeba." It gained its name because if this amoeba is enters ur system when water goes into your nose it can cause serious damage. Infections are very rare, but if you happen to encounter this protist it progresses very quickly and is usually fatal. Symptoms of this infection include headache, fever, nausea, and vomiting. As the infections progress you may also experience stiff neck, confusion, lack of attention, loss of balance and hallucinations. Typically, after 5 days it will result in the patient being in a coma. Scientists are still working to find effective treatments to fight this deadly infection.

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Naegleria fowleri Infection

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Get facts about Naegleria fowleri and why it is commonly called the brain-eating ameba

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Grass – Has fibrous roots and parallel veins, making it a monocot.

Sunflowers – Have 2 cotyledons, branched veins, vascular tissue in a ring, a taproot, and flower parts in multiples of 4 or 5, making them a dicot plant.

Corn – Has parallel veins, flower parts in 3s, and fibrous roots, making it a monocot plant.

Oak trees – Have 2 cotyledons, branched veins, a taproot, small flowers typically in groups of 4 or 5, and vascular tissue in a ring inside the trunk, making them a dicot plant.

Peanut plant – Has branching veins, 2 cotyledons, and a taproot, making it a dicot plant.

Onion – Has one cotyledon, parallel veins, fibrous roots, flower parts in 3s, and scattered vascular bundles, making it a monocot.

Peach trees – Have 2 cotyledons, branched veins, a taproot, vascular tissue in a ring, and flowers in 5s, making them a dicot plant.

Lilies - have 1 cotyledon, parallel veins, fibrous roots, and flower parts in 3s, making them a monocot plant.

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For my assignment I choose to find a video on Echinoderms and learn more about them. The word Echinoderm is latin and stands for "spiny skin." One of the most famous Echinoderms, is the starfish. Echinoderms live in the ocean and are all invertebrate. All echinoderms have radial symmetry, meaning that you can split their bodies into 5 identical parts. They also have something called tubed feet; they are small and tube like and part of their water vascular system. They are useful in the act of moving, breathing and eating. Some Echinoderms have chemical defenses, while others have spiny skin or a bad taste in order to protect themselves from predators.

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What Are Echinoderms? | Learn all about the phylum of starfish, sea urchins, and sea cucumbers!

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Homeostasis is how the systems within our bodies regulate and maintain themselves. It helps are bodies be able to adjust in order to keep the balance and help recover from injuries and illnesses. It keeps things like temperature, fluid balance and oxygen levels stable. There are two main ways homeostasis works: positive and negative feedback. Most homeostatic processes use negative feedback, this is where the body detects a change and reverses it. This includes things like sweating to cool down or shivering to warm up. The other process is positive feedback, this is where a process will amplify itself until a specific outcome is reached. Examples of this include child birth or blood clotting. Overall, homeostasis is essential for the body systems to be balanced and preventing harm from too much or not enough of vital substances.

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Homeostasis is how your body maintains internal balance so its internal systems can run as effectively as possible.

What is homeostasis?

Homeostasis is how your body regulates your internal systems so they function correctly. Your body works best when its internal environment - including things like temperature or oxygen levels - is just right.

The term homeostasis comes from two ancient Greek words meaning "equal" and "holding still." In other words, homeostasis means reaching and maintaining a state of balance. In this context, balance isn't about keeping you from toppling over. It's about having the right balance of everything you need.

Balance is key because too much of even the most essential things can be harmful. For example, everyone knows that water and oxygen are good things, and you need them to survive. But drinking too much water too quickly can cause hyponatremia. And breathing pure oxygen for too long can cause oxygen toxicity. Both of those conditions can be deadly.

How does homeostasis work?

Homeostatic processes are automatic, and a specific part of your brain, the hypothalamus, runs them. There are two main ways that homeostasis happens:

Negative feedback

Positive feedback

Negative feedback homeostasis

Negative in this context doesn't mean bad. It means your body senses a change and tries to counteract or reverse the unwanted change. Most homeostatic processes in your body rely on negative feedback.

Examples of negative feedback homeostasis include:

Blood pressure. Your blood pressure keeps blood flowing up toward your head against the pull of gravity.

Body temperature. If you're too hot, your body makes you sweat to cool you down. If you're cold, your body makes you shiver to generate heat. These are examples of thermal (temperature) homeostasis.

Fluid balance. If you drink too much water, you'll soon feel the urge to pee to get rid of the extra fluid.

Oxygen levels. Your heart and breathing rates increase and decrease depending on how active you are. That's an example of respiratory and circulatory homeostasis.

Positive feedback homeostasis

Positive feedback homeostasis means the processes add to themselves and get stronger. That will keep on happening until the initial cause is gone.

Examples of positive feedback homeostasis include:

Labor and delivery. When labor starts, your cervix starts to stretch, which triggers nerve signals that go to your brain. Your brain releases the hormone oxytocin, which causes uterus contractions. The more your cervix stretches, the more oxytocin your brain releases and the stronger the contractions get. That stops once delivery is complete and your cervix returns to its normal size.

Hemostasis (blood clotting). When you have a wound that bleeds, clotting factors in your blood activate to seal the wound. They also call for reinforcements, summoning even more clotting factors. They'll keep on calling for more clotting factors until the bleeding stops.

Immune responses and inflammation. When you have an infection or injury, your immune system causes inflammation at that site. Inflammation is your body's way of shining a spotlight on a specific place so immune cells know exactly where to go. And immune cells at the scene will keep inflammation going as long as they need more help.

Why is homeostasis important?

You can't survive without homeostasis and the processes that drive it. And every disease or medical condition involves a disruption of homeostasis.

When you get hurt or sick, your body adjusts its homeostatic processes so you can recover. That's why you get a fever with infections or your blood clots when you have a bleeding wound.

Chronic conditions happen when something goes wrong and your homeostatic processes can't adjust enough to make up for it. For example, high blood pressure (hypertension) happens when your body can't keep the pressure within a healthy range. Osteoporosis happens when your bones lose calcium faster than your body can replace it.

Some diseases happen because homeostatic processes malfunction and make things worse. Examples include:

Allergic reactions. Allergies happen when your immune system reacts to something that it thinks is a threat. Mild allergies may just be unpleasant. But if the reaction is too strong, that homeostatic process can be dangerous. For example, a bee sting causes brief pain and mild swelling for most people. But a sting can cause deadly anaphylaxis for someone with an allergy.

Autoimmune diseases. These happen when your immune system malfunctions and mistakenly attacks part of your own body. The reaction itself would likely be normal and healthy if the target were an infection or injury instead of your own healthy tissues.

Cytokine release syndrome (CRS) or sepsis. Immune system reactions naturally strengthen with time and will stop once the initial cause is gone. But those processes can rapidly become dangerous if your immune system reacts too strongly early on. That's why CRS and sepsis can become deadly so quickly.

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Homeostasis is a state of balance, and your body regulates its own systems to reach and maintain it. It's key to how all your body systems work.

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I choose a picture of the Arctic tundra. This biome is known for its long, harsh, very cold winters. Summers in this biome are short and cool. The vegetation in this biome is low-growing, including mosses, lichens, and grasses. The wildlife includes animals that have adapted to the cold climate. Examples of these animals are Arctic foxes, polar bears, and migratory birds. Biodiversity is especially low in the Arctic tundra. Overall, this biome has harsh conditions that make life challenging for both plants and animals.

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Parkinsonism is a syndrome that causes problems with movement such as tremors, bradykinseia (slow movement), muscle stiffness and posture instability. In order to be diagnosed with Parkinsonism at least 2 out of the four symptoms have to be present. There are many things that could cause Parkinsonism, such as strokes, brain tumors, certain drugs, and/or other brain problems that affect dopamine pathways. However, Parkinson's disease itself is a specific condition. It happens when the nerve cells in part of the brain called substantial nigra lose their color and develop clumps called levy bodies. Parkinson's is the most common cause of Parkinsonism. Doctors diagnose this disease by looking at a persons symptoms, not through labs tests or scans.

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Biodiversity is the total variety of all living things on earth. This word summarizes millions of habitats, species, individuals and characteristics. High biodiversity is important because it keeps ecosystems secure and supplies us with food, medicine, and costal protection. Activities such as habitat destruction, overhunting, and overfishing, has caused many populations to drastically decrease, or even go extinct. The loss of biodiversity is happening very quickly with some species declining by over 75% in just a few decades. This not only effects nature, but also us humans. It is important that we are aware of this problem and take action to help prevent this loss of life.