Answer:
B. A chemical reaction transforms thermal energy into chemical energy
Explanation:
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C. mRNA (the m stands for messenger)
They all work in different ways but they all work together. For example, the Skeletal and muscular system will help you move away from danger or fire. Although, the nervous system sends messages to the brain that there is danger or fire.
That branch would be interpretive medical anthropology.
<h2><u>Answer:</u></h2>
The correct option is B (The longer-spined sea urchins existed before the shorter-spined sea urchins.)
<h3><u>Explanation:</u></h3>
The more drawn out spined ocean urchins existed before the shorter-spined ocean urchins.
Since the shorter spined urchins are higher up, that demonstrates that they developed from the more drawn out spined urchins, implying that having the shorter spines was useful to them as an animal types, so the shorter spines came AFTER the more extended spines.
