An organism that lives in or on another organism and gets its food from or at the expense of its host
<span>Complete the sentence below by selecting the correct words from the drop-down menus.
There are three requirements for natural selection. The requirements are </span><span>✔ variationsimilarity</span><span>, <span>underpopulation✔ overpopulation</span><span>, and <span>✔ adaptationextinction</span><span>.</span></span></span>
Each one is made of one original strand and one new strand.<span>It bonds together the nucleotides in the new strand</span>
Calcium and phosphorus (as phosphate)