When AncestryDNA launched in 2012, we compared your DNA against 22 possible regions. We now have more than 1,500.
Answer: B. Closed
In a closed circulatory system is the one in which the blood is circulated to all the parts of the body of the organism through vessels of different length and width. In this system the blood is pumped from the heart through blood vessels where it is transported to different organs and cells of the body instead of filling up the body cavity.
Answer is: the part of an experiment that stays the same though out the experiment is constant.
<span>Constant is a quantity that does not change.
</span>Experimental variable<span>, which is the also part of an experiment, is affected by the experiment (have change).</span>
Answer:
Option A
Explanation:
Prokaryotic cells do not have specialized tasks because they are mostly unicellular (in rare cases multicellular) and don't have a nucleus.
Fr or take their whole test hahaha
