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Fish and shells will die and it won't be appropriate for many kinds of ocean life

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Ocean acidification occurs when carbon dioxide from the atmosphere dissolves in the ocean, forming carbonic acid. The formed acid breaks down into hydrogen ions and ocean's acidity increases. The result for coral reefs, is that its hard for them to build their skeletons and so their growth is affected.

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we used chalks instead of seashells. When vinegar was added, bubbles of carbon dioxide gas quickly formed around the chalk because of their reaction with the acid. Over time, we noticed that the chalk started to dissolve and break down. The surface became rougher and smaller, indicating that the calcium carbonate was being eaten away by the acid.

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pH started from 3 and risen to 4+ as time gone by

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The chalk after staying 15 minutes in the vinegar started to dissolve and gradually became smaller. Its surface turned rough with bubbles forming more slowly as the reaction progressed.

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The long-term effects of ocean acidification on marine ecosystems could be really bad. As the oceans become more acidic, organisms like corals and shellfish that build their skeletons and shells with calcium will struggle to survive. This can disrupt food chains and reduce biodiversity

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Ocean acidification happens when the ocean absorbs carbon dioxide from the air, making the water more acidic. This makes it hard for corals to build up their structure which is made from calcium carbonate. As corals weaken, they break down and the reefs they create start to disappear, destroying habitats. This also affects people who rely on coral reefs for fishing.

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there was a rise from pH from 3 to 4 plus

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we used chalk in the experiment. it stayed more than 15 minutes in there and it dissolved a lot progressivelly

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Ocean acidification is harmful for coral reefs, which are home to many marine species. This leads to the loss of habitats and reduced biodiversity. Shell-building organisms may struggle to survive and food chains are disrupted. These changes harm fisheries and tourism affecting both marine ecosystems and human communities.

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there was a rise in the pH from 3 to 4+ when chalks started dissolving

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there was a reaction and the chalks were affected by vinegar, dissolving a lot

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acidification destroys the object with calcium, the chalk

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Ocean acidification can alter the behavior and survival of marine species, affecting their ability to find food, reproduce or escape predators. The chemical changes in the water of the ocean could impact nutrient cyclesand over time, these shifts may result in unpredictable changes to the ocean ecosystems, affecting everything from tiny plankton to large predators.

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Chemical Process:

CO₂ dissolves in seawater, forming carbonic acid.

This acid dissociates into hydrogen ions and bicarbonate, reducing carbonate ions needed for calcifying organisms.

Result: Lower pH (more acidic) and fewer carbonate ions.

Impact on Marine Life:

Coral Reefs: Harder for corals to build skeletons, weakening reefs and habitats.

Shellfish: Thinner, weaker shells reduce survival.

Ecosystem Effects: Disrupted species interactions, altered behavior, and reduced biodiversity.

Recent Concerns:

Rising ocean temperatures and acidification exacerbate coral bleaching.

Conservation efforts (e.g., reef restoration) aim to mitigate damage, but challenges persist.

UNESCO warns of unprecedented ocean warming and its severe consequences.

Efforts to combat ocean acidification are critical for preserving marine ecosystems and their benefits to humanity.

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the effects could include

coral reef damage

harm to shellfish

food chain disruptions

species loss

ecosystem imbalance

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we used eggshells for calcium

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before

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After

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The acid reacted with the calcium carbonate in the shell and produced carbon dioxide gas.
As soon as the eggshell touched the acid, bubbles started forming on its surface. This showed a chemical reaction is happening and carbon dioxide gas is being released. Then the shell begun to look rough or started dissolving. In some spots, it got thinner or soft.

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the pH went from 3 to 4+

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When we put the seashells in vinegar, I saw bubbles forming right away and the shells slowly started to dissolve. That showed me there was a reaction happening between the acid and the shell.

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If ocean acidification keeps getting worse, I think animals like clams, corals and some plankton might not be able to build strong shells. That would hurt the whole food chain in the ocean.

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The seashells fizzed in the vinegar and started breaking down over time. It looked like they were getting softer and weaker.

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In the long run, ocean acidification could damage coral reefs and reduce biodiversity. Many marine species depend on shells or skeletons made of calcium carbonate and if those dissolve, it could lead to serious ecosystem problems.

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Ocean acidification happens when too much carbon dioxide from the air gets into the ocean. The CO₂ reacts with the water and makes it more acidic. This makes it harder for sea animals, like corals and shellfish, to build their shells and skeletons because there's not enough carbonate left in the water. Coral reefs are especially affected they grow slower, can become weaker and might even die if this continues. That’s a big problem because so many fish and other sea animals live around coral reefs. It made me realize how climate change is affecting the ocean, even if we can’t always see it.

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The long-term effects of ocean acidification on marine ecosystems could be very serious. Many sea animals like corals, need calcium carbonate to build their shells and skeletons. If the ocean gets too acidic, they won’t be able to grow properly, and their shells could even dissolve. This would hurt the food chain, because lots of fish and bigger animals depend on them for food. Coral reefs might disappear, which means many species could lose their homes. In the long run, ocean acidification could reduce biodiversity and change the whole balance of marine life.