Answer:
to test for liberation of O₂ in the light.
Explanation:
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The telescope that was the first to use many mirrors in a honeycomb pattern to avoid the difficulties associated with large mirrors was the Hubble telescope. The mirror was started by Perkin-Elmer in 1979. Kodak did make a back-up mirror that is now on display at the National Air and Space Museum. The correct answer is A.
Answer:
The contractile vacuole acts as part of a protective mechanism that prevents the cell from absorbing too much water and possibly lysing (rupturing) through excessive internal pressure. The contractile vacuole, as its name suggests, expels water out of the cell by contracting.
Explanation:
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