Which is the correct pair of complementary nitrogenous bases in dna?
adenine and thymine
cytosine and thymine
guanine and thymine

Which of the following statements are true chromosomes make up genes

Which identifies the main purpose of biological taxonomy?

Elephants in the savanna regions of africa dig holes in dried up river beds to reach water lying just below the surface. these holes provide drinking water for other animals as well. so, without the elephants, many animals might otherwise die from lack of water during the dry season. the location in which the elephants live is an example of a/n and the role they play in creating water holes is an example of a a) ecosystem; habitat b) community; niche c) habitat; niche d) niche; habitat