D) DNA is found in chromosomes in the nucleus, while RNA can move around the cell.
Muscles connect to your<span> skeleton and they contract and </span>move the skeleton along.<span> The calcified bones of </span>your<span> skeleton also work with the circulatory </span>system<span>.
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3. naturally occurring
4. fossilized plants or air bubbles ( probably the plants tho)
5. increased
6. the green house effect occurs naturally, it is being polluted both naturally and unnaturally, the unnatural pollution is contaminating our 'greenhouse" and that is horrible.<span />
Answer:
Primary active transport directly uses a source of chemical energy (e.g., ATP) to move molecules across a membrane against their gradient.