Human+Activity+on+Fish+Population

Denisse Simonian period 6 background research

Problem statement: The effect of human activity on fish population.

Background: Humans have affected fish for many years. We make increase their population but, at the same time, we decrease it. We can increase it by aquaculture. With aquaculture, we get fishes and force them to mate with each other. They reproduce that way and therefore, make more fishes. We decrease their population by catching fish and eating them. We decrease it even more with over fishing. Over fishing is when people fish at a large amount. Also, when humans dump oil into the oceans, the fish die, decreasing their population greatly. When countries are at war, one country can dump oil into the other countries ocean. People will also dump oil illegally into the oceans because they don’t want to spend their money on decomposing it. So, they decide to just put it all into the oceans, killing a lot of fish. Or even a little mistake, like not checking ship equipment right. If the equipment breaks down, it can cause an oil spill. If it does, “the tanker can get stuck on shallow land. When they drive the tanker again, they can put a hole in the tanker causing it to leek oil.” (http://library.thinkquest.org/CR0215471/oil_spills.htm) In this experiment, we will simulate how oil affects fish and how much it affects fish. The independent variable in this experiment is the human activity. Human activity, such as carelessness described in the previous paragraph, causes fish population to go down. The dependant variable is the fish population because it depends what humans do for the population to increase or decrease. The constant in this experiment are the type of fish, how much oil is poured into the bowls, the type of bowls, and the amount of fish.

References: http://library.thinkquest.org/CR0215471/oil_spills.htm