Complementary base-pairing rules simply state that A. either purine can bond with either complementary pyrimidine. For example, adenine can pair with cytosine or thymine.

B. base pairs form between complements. For example, adenine pairs with guanine, and thymine pairs with cytosine.

C. like bases complement like bases. For example, adenine pairs with adenine, guanine with guanine, etc.

D. base pairs form between complements. For example, adenine pairs with thymine, and cytosine pairs with guanine.

rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.