Proxy data is used when we cannot get direct measurements from a source. Give an example of a proxy data source and identify one climate factor that it can give us

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?

Dna replication or repair occurs in a cell in all of thw following situations except when

Resperation is a way to release carbon back into the atmosphere