GracieMaeB
23.01.2021 •
Biology
Observe: Put two Elodea sprigs into a test tube. Put the O_ICO, probe into the tube with the Elodea. Click
Play. As the Gizmo runs, Pause (1) it a few times.
I
A. How do the oxygen () and carbon dioxide
(CO) levels change over time?
B. What is always true about the total amount of Oz
and Co, in the test tube?
c. What happens when the CO, reaches zero?
Solved
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Ответ:
Because 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.