What aspect of mid-ocean ridges provides the mechanism that allows plate tectonics to occur?
a old rock is melted into magma.
b choice 2 (correct answer) new rock is formed from magma.
c seamounts are shaped.
d trenches are destroyed.

This question is only for applicants to scholars for medicine or scholars for dental medicine: what aspects about medicine (or dental medicine) intrigue you? describe how these aspects influence your life. (100-650 words)

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?