Arid and semiarid lands are prone to desertification because of

Enteric bacteria commonly live in the intestines of animals. A: true B: false

What characteristics do mutations have?

Which homeostatic process moves particles against a concentration gradient

Homologous chromosomes: a. carry genetic information that influences the same traits. b. are genetically identical. c. are inherited only from the mother. d. are members of different pairs.

What do snakes and giraffes have in common? (key shared characteristics)

Some insects can glide across the surface of water due to water's:

Which statement describes the area swept out by a line between a planet and the sun at equal times as the planet moves along its orbit? It changes shape but always remains constant. It is proportional to the distance between the sun and the planet.

Chlorine phosphorus sodium and zinc are examples of

What makes ribosomal RNA useful as a molecular clock? A - A large portion of the DNA ring is not vital to structure or function, allowing it to accumulate neutral mutations.

What does natural selection mean?