7. During strenuous exercise, skeletal muscles use up and produce large amount of , which causes pain and fatigue in the muscle. A. Oxygen, lactic acid C. CO2, pyruvic acid
B. Pyruvic acid, lactic acid D. Pyruvic acid, CO2

A. Oxygen, lactic acid

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )

zxndjdjxjjxik no f cnnxn k is s dksoozkdkxjxjxjxj