Which of these describes a population? a. all the organisms that interact in a lake b. all the gray squirrels that live in a forest c. an area characterized by a group of plants and animals d. a nonliving factor in an organism’s environment is it b?

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 of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?