Answer:
Natural selection can lead to speciation, where one species gives rise to a new and distinctly different species.
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>
Competition because they are fighting over a limited resource.
Answer: C
Explanation: You can tell when the % of corn increases so does the weight gain.
A search method employed by two or more people overlapping separate line searches forming a grid.
Not to sure tho hope this helps
