How do round, spiral, and rod-shaped bacteria look like?

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.

Which units ate used to measure both velocity and speed? check all that apply

Any sound above what db can cause hearing loss in human beings