Which statement best describes how minerals are different from rocks?
a. minerals occur naturally and have a fixed chemical composition.
b. minerals fracture and contain silica.
c. minerals contain metal and dissolve in acid.
d. minerals are expensive and difficult to get.
answer !

Which of the following are false concerning microbes? a. microbes generate oxygen through photosynthesis. b. the primary role of microbes on the planet involves causing disease in animals and humans. c. microbes produce vitamins in the intestines. d. microbes play a role in breaking down waste and decomposing dead organisms.

Asap what occurs after cytokinesis is completed at the end of meiosis 1?

How are the testes and ovaries similar? a. both produce sex cells. b. both connect internal reproductive organs to the exterior. c. both transport sex cells from their site of production. d. both store mature sex cells.