The Mesozoic era is often called the age of reptiles. Which of the following also occurred during this era?

A) the origin of animals in the oceans
B) the appearance of the first plants on land
C) the appearance of the first animals (tetrapods and insects) on land
D) the appearance of the first mammals and flowering plants on land


Answer: D

Biology & Microbiology

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What will be an ideal response?

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Sarah observed that the mystery pond organisms never come up to the pond's surface. If she catches one of these organisms and observes closely, perhaps dissecting the organism, she should find _____

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