What are the four major fields of study in earth science?

Which of the following represents a negatively charged ion? of t 7

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.

The fauces connects which of th following structures to the oropharynx