Answer: make systematic observations and carefully collect relevant evidence.Then they use logical reasoning and some imagination to develop hypotheses and explanations.
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Explanation:
Answer:
They once thought that humans came from monkeys and apes but now they think they come from a ancient ancestor not from the monkey or ape family.
Explanation:
Most closely related to the Otariidae
4.6 million years ago the earth had less green house gasses so the atmosphere was cooler rather than hotter.