Ascientist was studying the effects of oil contamination on ocean seaweed. he believed that oil runoff from storm drains would keep seaweed from growing normally. he had two large aquarium tanks of equal size. he kept the amount of dissolved oxygen and the water temperature the same in each tank. he added some motor oil to one tank but not to the other. he then measured the growth of seaweed plants in each tank. in the tank with no oil, the average growth was 2.57cm/day. the average growth of the seaweed in the tank with oil was 2.37cm/day. based on this experiment, answer the following questions:

what was the question that the scientist started with?
what was his hypothesis?
identify the independent variable.
identify the dependent variable.
identify the control(s).
what did the data show

What was the question that the scientist started with?

What affect does oil contamination have on ocean seaweed?

What was his hypothesis?

His hypothesis is that oil run off would keep seaweed from growing normally.

Identify the independent variable.

The oil.

Identify the dependent variable.

The ocean seaweed.

Identify the control(s).

The water.

What did the data show

The data showed that oil contamination in water does in fact have an affect on ocean seaweed. The plant in water without water grew .20 more centimeters than the plant in the oil contaminated water.

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."    

did you fail the test? xd