People and animals breathe in oxygen from the air and exhale carbon dioxide.
what happens to the carbon dioxide in the air?
a. some animals breathe in carbon dioxide and exhale oxygen.
b. the carbon dioxide floats into the atmosphere and forms clouds.
c. plants use carbon dioxide to make sugars and oxygen.

Research cheetahs on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? -cheetah how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d

Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content