An enzyme may become inactive when: a. body temperature rises excessively b. the ph of body fluids becomes too acidic c. homeostasis is being maintained : d. all of the above e. a and b only f. b and c only

rocks and weathering-matching

the major parts of the digestive system:

salivary glands.

pharynx.

esophagus.

stomach.

small intestine.

large intestine.

rectum.

accessory digestive organs: liver, gallbladder, pancreas.

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation:

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.