The answer is.......4!!
Explanation: All you have to do is 12/3.0 and you will get four!
If a higher concentration of salt is placed outside of the cell membrane, the water will leave the cell to bond with it. The loss of water from this movement causes plant cells to shrink and wilt.
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The answer is increased mutation rate.
Reproductive isolation is the existence of biological factors that impede members of two species from interbreeding and producing viable fertile offspring. These biological barriers may be pre-zygotic or post zygotic; post zygotic barriers include developmental errors of embryo, become infertile, or not living long enough to reproduce; while the prezygotic barriers include; habitat isolation, temporal isolation, genetic barriers among others.
b.) 1 mile\15 miles
i just have to use 20 words ssry
but 15x 3 =45
