E-wastes are a source of ________
A) acid corrosives
B) compostable organic compounds
C) heavy metals
D) ignitables
E) radioactive materials
Answer: C
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For what percent of Earth's history have geologic processes been studied?
A) 0.000 004 B) 0.000 000 4 C) 0.000 000 04 D) 0.000 04
Conservation is
A) the sustainable use and management of natural resources. B) maintenance of resources in their present condition. C) invention and diffusion of new agricultural practices. D) breeding programs to rebuild endangered species. E) maintaining wild environments.
Severe wildfires followed by heavy rains have significantly eroded the soil of a formerly forested region. Which one of the following horizons is most likely intact with little disturbance?
A) A horizon B) O horizon C) E horizon D) C horizon
Which of the following stimulates the enzyme isocitrate dehydrogenase?
A) ATP and NADH + H+ B) ADP and NAD+ C) acetyl CoA D) none of these