Of the 21 amino acids that are the building blocks for proteins, how many must come from the foods you eat? O 10
06
O 11
09

There are nine essential amino acids, which you must get through your diet: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine. They're vital for functions such as protein synthesis, tissue repair and nutrient absorption. Therefore, answer is D.

Explanation:

Brainliest please?

There are 10 essential amino acids that the body can't synthesize.

the last one: artificial selection/genetic engineering

plant breeding is modifying the genetic composition of the plant - but this isn't cloning (which is specifically introducing a gene into a genome). but you are artificially selecting for the phenotype that you want.

the second one is literally genetic engineering - the gene would have been cloned first and then inserted or genetically engineered into the new plant cell (the cotton).