If two populations of birds stop interbreeding because of a difference in song patterns this would be described as behavioral isolation.
A simple <em><u>refracting</u></em> telescope uses two convex lenses to gather and focus light from a distant object.
Answer:
<em>It is a constant when the light is traveling in a vacuum.</em>
Explanation:
Answer:
I believe the cell is a plant cell
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Hormones are chemical messengers transported by the bloodstream that can have different effects should be the correct answer for the question