A nebula is an interstellar cloud of "Dust and Gas"
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The ability of chemotherapy to kill cancer cells depends on its ability to halt cell division. Usually, cancer drugs work by damaging the RNA or DNA that tells the cell how to copy itself in division. If the cancer cells are unable to divide, they die.
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rRNA is located in the cytoplasm of a cell, where ribosomes are found. rRNA directs the translation of mRNA into proteins.
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I am 99% the answer is A. Darwin did not discover Archaea, Evolution does NOT happen in a straight line, and variation is totally different than evolution.
Explanation:
Answer:
Contracted blood vessels
Explanation:
The volume of blood is reduced as the vessels are more narrow due to the contraction, so less blood reaches the respiring tissues, causing the force of blood flow to increase as there is less space for normal blood flow to occur. This means that blood pressure increases.