Why is carbon essential to life on Earth? A. Carbon can form compounds of many sizes and shapes.

B. Animals need carbon in order to breathe.

с. Plants use carbon to absorb water into their roots.

D. Carbon is the most abundant element on Earth.

Astudent conducts an experiment to determine how the amount of water given to a plant affects it growth what is the dependent variable for this experiment

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection

Select the correct answer from each drop-down menu. during the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.