Which group of chemicals can cause birth defects?
A. teratogens
B. mutagens
C. carcinogens
D. neurotoxins
Answer: A
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The rapid northward movement of ____, resulted in the formation of the ____ mountains
a. Africa; Andes b. Africa; Jura c. India; Andes d. India; Apennine e. India; Himalayan
What type of marine scientist studies the Earth's ocean, continents, and climate?
a. Physical oceanographer b. Marine climatologist c. Chemical oceanographer d. Marine geologist
An overshooting top means that:
A) the thunderstorm has very strong updrafts causing the cloud to grow into the stratosphere. B) lightning strikes will be especially intense. C) a thunderstorm will DEFINITELY produce a tornado. D) the thunderstorm is dissipating.
Which of the following is a type of ecosystem service in the United States?
- production of clean water for human consumption - pollination of apple, orange, and peach trees - production of oxygen by trees - All of the listed choices are examples of ecosystem services in the United States.