Can the terms pollution and pollutant be used interchangeably?

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.

What do all of the above organisms have in common

Which fossil organism in whale evolution do you think was the first to live mostly in water? explain your claim with evidence and reasoning?