The bond that holds together the two amino acids is a peptide bond, or a covalent chemical bond between two compounds (in this case, two amino acids). It occurs when the carboxylic group of one molecule reacts with the amino group of the other molecule, linking the two molecules and releasing a water molecule.
yes. but occasionally they meet up with their packs during the night
Salmon; chia seeds; tofu; walnuts; flax seeds; shellfish; canola oil; navy beans; avocados and brussel sprouts are all excellent sources of omega-3 fatty acids.
C) is the best answer because atmosphere deals with gases and hydrosphere deals with water.
Hope this helps... BTW you took out (water) in the question C