Biological effects of ionizing radiation include
A. damage to molecules in cells.
B. mutations.
C. damage to DNA.
D. All of these are correct.
Answer: D
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An increasingly centralized Soviet state was achieved through
A) perestroika. B) glasnost. C) state-controlled education. D) Soviet-styled fashion. E) Soviet-styled architecture and state-controlled agriculture and industry.
La Niña
A) always occurs simultaneously with El Niño. B) always occurs in the year after El Niño. C) lasts between 3 and 6 months. D) is caused by intensified trade winds. E) leads to warmer than normal waters in the eastern Pacific.
Dangerous rapid currents that can pull swimmers out to sea are called ____________________
Fill in the blank(s) with correct word
Calcareous sediments of the North Atlantic occur at deeper depths than calcareous sediments in the North Pacific.
Answer the following statement true (T) or false (F)