What happens when oxygen atoms share electrons? A. They form polar molecules
B. They form covalent bonds
C. They form ionic bonds
D. They form water molecules

In dna, only the_ varies from one nucleotide to another. base phosphate sugar amino acid

During the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

Consider the following reaction: 2h2 + o2 —> 2h2o a) what are the reactants in this reaction? b) what are the products in this reaction? c) how many molecules of oxygen are used in this reaction?