Under the law called REACH, who is responsible for determining if a chemical is safe?
A. the manufacturer
B. the public
C. public sector scientists
D. the government
Answer: A
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Why is water vapor not implicated in climate change as methane and carbon dioxide are?
A) Water vapor is not a greenhouse gas. B) Carbon dioxide and methane are not just greenhouse gases, they are also toxic to most organisms. C) The concentration of water vapor in the atmosphere has remained relatively constant despite changes in human activities. D) Water vapor is a liquid, not a gas, so it precipitates out of the atmosphere frequently.
As Earth rotates on its axis, it wobbles like a spinning top, and this wobble, is known as the eccentricity of Earth’s axis
a. True b. False
At ________ plate boundaries, tectonic plates are pushed away from each other when magma rises to the surface, creating new crust
A) transform B) trench C) divergent D) subvergent E) convergent
A moving object has
A) speed. B) velocity. C) momentum. D) energy. E) all of the above