Ques:Q: Which organ system defends the body from pathogens and other causes of disease? Choices: - digestion system - nervous system - respiratory system - immune system A:

Ans:immune system
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Ques:Q: Symptoms of viral diseases result from what kind of response to a virus? Choices: - infection - pathogenic - mutation - immune A:

Ans:immune
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Ques:Q: What are considered to be the most basic concepts in the field of physical science? Choices: - change and energy - energy and motion - force and matter - matter and energy A:

Ans:matter and energy
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Ques:Q: What is produced during a condensation reaction? Choices: - rain - wind - fire - water A:

Ans:
water
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