What happens to the blood which reaches the lungs from the pulmonary artery?

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Which is an example of a population?

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.