A scientific theory is one that:
a. sounds the most plausible.
b. is supported by many years of experimentation all supporting the hypothesis.
c. changes each time a different observation is made.
d. is the result of all scientific experiments.
e. is based on hunches with no actual supporting evidence.
Ans: d. is the result of all scientific experiments.
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American alligators are living members of this lineage
a. Testudines b. Archosauromorpha c. Squamata d. Sphenodontia e. Amphibia
Which disease is caused by an enveloped virus?
a. hepatitis b. AIDS c. polio d. common colds e. warts
Insulin directly affects the
a. secretion of saliva. b. storage of proteins. c. secretion of pancreatic juices. d. metabolism of glucose. e. utilization of fat reserves.
All mammals have hair, mammary glands, and a placenta.
Answer the following statement true (T) or false (F)