Ques:Q: What bodily defense can be acquired in an active or passive way, and can be natural or artificial? Choices: - skin - membrane - nerves - immunity A:

Ans:immunity
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Ques:Q: The direction of the force of gravity is in what direction? Choices: - staggered line - curved line - fragmented line - straight line A:

Ans:straight line
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Ques:Q: Typically hard, high-melting solids that conduct heat and electricity well, the transition elements have many properties in common with other what? Choices: - oils - deposits - organics - metals A:

Ans:metals
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Ques:Q: What kind of relationship exists between living things that depend on the same resources? Choices: - parasitic - symbiotic - antagonistic - competition A:

Ans:
competition
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