An organism that is visible only under an electron microscope and that can grow only with the assistance of another organism is a(n) _______________

Amytrophic lateral sclerosis affects

a. UMNs and LMNs b. Primary afferents and LMNs c. UMNs d. LMNs

Which of the following is considered a human- caused disaster?

A) Volcanic eruption B) Fire C) Tsunami D) Communicable disease epidemic