The arm and hand of human, the paw of a cat, and the wing of a bat look similar when they are viewed in an x-ray. What do scientists conclude?
Group of answer choices
A. Humans, cats and bats are all the same species.
B. Humans, cats and bats have a common ancestor.
C. Humans and cats evolved from bats.
D. Humans and cats can fly if they work hard enough to acquire that trait.
Answers: 2
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Add solid urea to a beaker of water. the beaker gets very cold. is δh favorable or
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