a _____ is a mix of gas and dust emitted by a volcano that is so dense that it hugs the ground.
What will be an ideal response?
pyroclastic flow
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Permafrost describes those portions of the ocean that are constantly covered by floating ice
Indicate whether the statement is true or false
When you are nice to a person, the person will likely be nice to you. This is
A. an example of Newton's third law. B. not an example of Newton's third law. C. personalized physics. D. all of Newton's laws personified.
The Clean Water Act could be strengthened by ____.
A. requiring septic tank permits B. focusing purely on end-of-pipe pollution removal C. allowing citizens to bring lawsuits to ensure that water pollution laws are enforced D. establishing national pollutant standards E. giving responsibility of monitoring and enforcing water pollution laws to private companies
The wild pet trade has impacted all but which of the following animals or types of animals?
A. Parrots B. Reptiles C. Amphibians D. Guinea pigs E. Tropical fish