e. There are haploid, diploid, and triploid cells.
Heat will flow from the copper coin to the brass coin.<span>
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The answer is relative dating.
Supply oxygen to cells for cellular respiration.
A proposed explanation for a wide range of observations and experimental results that is supported by a wide range of evidence. ... Most factors are held constant in a scientific experiment because you can only change one factor in an experiment so if you notice something, you'll know what caused it.