Answer:
A. When many species share a single ancestor
Explanation:
Yes, There is no spherical symmetry in biology. But is in Spherical
Answer:
B.
Explanation:
most valleys are weathered by running water. Glacier can also weather these. Because of running water it will carry the weathered pieces away.
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Answer:
D. seafloor spreading
Explanation:
If you explore two oceanic plates at a convergent boundary , you will observe seafloor spreading.
