What factor primarily determines the time of year that a plant flowers? a. availability of water b. number of nearby plants c. daily hours of darkness d. amount of nutrients

Analogy- 1 is to arete as 5 is to cirque horn glacial valley hanging valley

Rank the three variables in terms of how strongly they affect the "species" composition of the bacterial communities. place the variable with the weakest effect on the left and the variable with the strongest effect on the right.

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?