Ques:Q: When heat flows into an object, its thermal energy increases and so does its what? Choices: - matter - speed - color - temperature A:

Ans:temperature
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Ques:Q: What is it called when currents keep reversing direction? Choices: - circle current - emitting current - stream current - alternating current A:

Ans:alternating current
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Ques:Q: What is the main organ required for respiration in mammals? Choices: - the diaphragm - the heart - the brain - the lungs A:

Ans:the lungs
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Ques:Q: In which way do vertebrates reproduce? Choices: - bisexually - unisexually - asexually - sexually A:

Ans:
sexually
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