D. They had to see if this new idea fit the evidence they found in their experiments.
Answer:
Genetic diversity has decreased due to inbreeding due to dwindling population size.
Answer:
They became closer to each other.
Explanation:
When skeletal muscles contracts the Z lines that are at the end of every sarcomere became closer to each other due to the fact that the I bands that are attached to the Z lines and contains the myosin filaments move closer to each other interacting with the actin filaments and shorten the the H zone that is in the middle of the sarcomere. In other words, It all becomes compact during a contraction.
It would be the last one. ' enables an organism to survive and reproduce.'
I was going to say C, but adaptions are changes, so they wouldn't continuously change.
Adapting helps the organism change in order to develop in its environment
Hope this helps :)