I believe the answer is C.) Organisms from different species looking for the same resource
When<span> the number </span>of<span> electrons </span>does<span> not equal the number </span>of protons<span>, the </span>atom<span> is</span>ionized<span>. (The </span>atom<span> is then called an ion). ... </span>If<span> your </span>atom is too ionized<span>, it </span>will<span> likely zip away from </span>you<span> and attach itself to a nearby </span>atom<span> or molecule. An </span>atom becomes radioactive when<span> its nucleus contains </span>too<span> many or </span>too<span> few </span>neutrons<span>.</span>
Answer:
C
Explanation:
<em>The correct answer would be the group that was given a placebo.</em>
A control group in an experimental study is the group that is subjected to all other conditions except the variable whose effects are being determined during the course of the experiment.
<u>Since the main goal of the research is to evaluate the effectiveness of the HPV vaccine, the difference between the experimental and the control group would be the vaccine.</u> Instead, the control group would be given a placebo - a substance that is designed not to have any effect but looks like the vaccine itself.
<em>Correct option: </em><em>C</em>
The endocrine system or the skin (:
