The answer is A Plants use carbon and release oxygen, and animals release carbon and uses oxygen
<span>This phylum exists exclusively in the sea, and cannot be found on land or in fresh water.
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Answer:
D. on the surface, directly above the focus
Answer:
Experimental groups: type of dogs
Dependent variable: hearth rate
Independent variable: the amount of caffeine
Explanation:
The dependent variable is the variable being measured or tested in a given study, while the independent variable isn't changed by the other variables. In this case, the heart rate is dependent on the amount of caffeine, which is then the independent variable. The experimental groups are the groups exposed to the independent variable.
It would be difficult to find the ideal CO2 level with a low light intensity because the plant will have a difficult time trying to survive.