Which statement best describes the relationship between a dependent variable and an independent variable in a scientific investigation? the independent variable changes in response to changes in the dependent variable. the dependent variable changes in response to changes in the independent variable. the dependent variable and the independent variable each change separately due to controls. both the independent variable and the dependent variable are controlled by the experimenter.

The correct answer is the dependent variable changes in response to changes in the independent variable.

Explanation:

Dependent variable is defined as the variable which varies in accordance to the change in independent variable. For Example: Current is a dependent variable and voltage is the independent variable according to Ohm's law.

I ∝ V

Independent variable is defined as the variable which does not change in accordance to any other variable in a given scientific experiment. For Example: Time (as expressed in seconds)

Hence, the correct answer is the dependent variable changes in response to changes in the independent variable.

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."    

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