The answer is : They are distantly related so their development is similar. They have different genetic materials.
Answer: "hazardous substance" .
_____________________________________________________
Answer:
<em>Embryo</em><em> </em><em>retention</em><em>,</em><em> </em><em>a</em><em> </em><em>cutic</em><em>le</em><em>,</em><em> </em><em>stomat</em><em>a</em><em>,</em><em> </em><em>and</em><em> </em><em>vascu</em><em>lar</em><em> </em><em>tissu</em><em>es</em><em>.</em>
Skin cells are made of proteins, water, and fat. But brain cells are only made up of amino acids, which ca make protein.<span />
All controlled experiments would have only one variable. If there were more than one variable the outcome of your experiment could be for multiple reasons and thus you would not be able to test whether your specific hypothesis was valid.