What is the fate of pyruvic acid in an organism that uses aerobic respiration? a. it is reduced to lactic acid. b. it reacts with oxaloacetate to form citrate?

it is converted to acetyl coenzyme

Explanation:

A better known as     acetyl CoA.    Pyruvic acid, the product of glycolysis, can not enter the Krebbs-Cycle directly, it must loose one molecule of CO2 and become a 2 carbon compound by decarboxylation resulting in  acetyl coA.

"a scientist studying a whale and its surroundings would need to understand the structure of atoms in case something was negatively affecting the whale or its surroundings."

explanation:

this was from the link provided:

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.