Lactic acid is a byproduct of aerobic respiration.
a) true
b) false< =answer
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Foods that fill your body with sugar and fat but little else, are said to contain

Which of the following supports the argument that viruses are nonliving? a) they are not cellular. b) their dna does not encode proteins. c) they have rna rather than dna. d) they do not evolve.

Active immunity refers to: a. the defenses people are born with. b. temporary immunity granted from another source. c. immunity gained through immunization and exposure to diseases. d. natural immunities that protect humans from other animal diseases