Describe the ecosystem of Durham, North Carolina. In your description, include at least one biotic and one abiotic factor.

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?

How would you describe the the organisms in the second row of model 1 that are connected to the parents by a line

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box