cameron12502
09.03.2021 •
Biology
32. Communities of bacteria have been found living thousands of feet und
Which of the following statements is a proper conclusion to draw about the
a. Somehow they are conducting photosynthesis.
b. They are living on borrowed time.
c. They were somehow introduced by human activities.
d. They use an energy source other than sunlight.
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Ответ:
Life on Earth began in the water. So when the first animals moved onto land, they had to trade their fins for limbs, and their gills for lungs, the better to adapt to their new terrestrial environment. ... In air, eyes can see much farther than they can under water. Tetrapods evolved from a group of organisms that, if they were alive today, we would call fish. They were aquatic and had scales and fleshy fins. ... Between 390 and 360 million years ago, the descendents of these organisms began to live in shallower waters, and eventually moved to land.
Explanation: