Stella, a kindergarten teacher, is teaching her students about mammals. she uses human beings as an example to explain this concept because human beings match the key features of mammals. in this scenario, human beings serve as a(n)

If the coding part of an mrna molecule is 1800 nucleotides (bases) in length, this molecule will contain codons and code for a polypeptide that is amino acids long.

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

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone