Question 18 OT 25 Scientists study how the continents move. Why might scientists use a model
to show this movement?
A. It is too dangerous to observe directly.
B. It is too fast to observe directly.
C. It is too slow to observe directly.
O D. It is too complex to observe directly.

A. It is too dangerous to observe directly.

Hope this helps! :D

answer; i believe that the best answer is (secondary cardiac arrest due to

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: