Ques:Q: Why are eutherian mammals sometimes called placental mammals? Choices: - identical placental connection - reacts placental connection - minor placental connection - complex placental connection A:

Ans:complex placental connection
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Ques:Q: Just as the reaction of a diol and a diacid forms a polyester, the reaction of a diacid and a diamine yields this? Choices: - phenol - polyethylene - acetone - polyamide A:

Ans:polyamide
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Ques:Q: What step, involving placement of a substance on the stigma, precedes fertilization? Choices: - mitosis - spawning - hibernation - pollination A:

Ans:pollination
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Ques:Q: What is composed of a calcium cation and a nitrate anion? Choices: - calcium carbonate - dynamite - nitrous oxide - calcium nitrate A:

Ans:
calcium nitrate
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