Tsunamis are usually:
a. deep-water waves.
b. shallow-water waves.
c. wind waves.
d. capillary waves.
e. the result of winter storms.
B
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A marine fish with a cold body temperature that matches its cold surroundings is an example of rev
A. negative feedback. B. regulating. C. conforming. D. conditioning.
Replication of DNA occurs during ____
a. S phase b. G1 phase c. G0 phase d. prophase e. cytokinesis
Pacific salmon migrate upstream and after breeding, soon die. They are termed
A) iteroparous. B) semelparous. C) dioecious. D) monoecious.
Many instances involving genetically modified organisms, especially food crops, will be entering the human food chain in the years to come. On what basis are genetically modified foods considered safe to eat?
A) Because of the possible economic impact of rigorous testing, such food products are minimally tested in sheep and cattle. B) All products to be cleared for human consumption have been personally tested by all members of the regulatory agency. C) They are only slightly toxic. D) Genetically modified food products are considered safe if they are found to be not toxic or allergenic or have other negative physiological effects. E) Each genetically modified food product is screened for its resistance to antibiotics.