Ques:Q: In addition to spiral cleavage, protostomes also undergo which other form of cleavage? Choices: - straight - diagonal - dispersive - determinate A:

Ans:determinate
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Ques:Q: What do chemical reactions need to be activated? Choices: - food - space - products - energy A:

Ans:energy
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Ques:Q: What process determines which of two fossils is older or younger than the other? Choices: - differential dating - difference dating - curve dating - relative dating A:

Ans:relative dating
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Ques:Q: What begins when a neuron receives a chemical stimulus? Choices: - a induce impulse - a metabolism impulse - nerve reaction - a nerve impulse A:

Ans:
a nerve impulse
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