Ques:Q: What is the name for the sinking of the dense, salty seawater in cold climates? Choices: - cyclones - jet stream - tidal activity - downwelling A:

Ans:downwelling
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Ques:Q: What kind of waves consist of vibrating electric and magnetic fields? Choices: - gaseous waves - sound waves - hydraulic waves - electromagnetic waves A:

Ans:electromagnetic waves
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Ques:Q: Pathogens infect many animals and are agents of what? Choices: - drought - mutation - change - disease A:

Ans:disease
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Ques:Q: Closely associated with "work", what is characterized by its many forms and the fact that it is conserved? Choices: - heating - fuel - matter - energy A:

Ans:
energy
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