Answer:
The horizontal rows/lines on the periodic table are called periods.
Explanation:
Organelles.
balalalallallalalalalallalalallalalala, this answer is right.
The answer is D, The structure was probably functional in some ancestor of the modern organism. Vestigial structures are structures that have remained from ancestors but have no function in modern times.
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I believe the answer is tertiary
Answer: A generalist is a species that occupies a variety of ecology niches.
Explanation:
