9. suppose that species a evolves and species b evolves in response to the changes in species a. species a then changes in response to the changes in species b. this is an example of

a. convergent evolution.
b. extinction.
c. adaptive radiation.
d. coevolution.

Correct D). Co-evolution

The co-evolution is the process of reciprocal revolutionary changes that are known to occur between the two or more species. The activity of each species, which participate in the interaction, applies a selection pressure to the others. It is one of the primary methods by which biological communities are organized.  

Example: Predator-prey relationship, in this relationship, there is selective pressure on prey in order to avoid capture. As a result of that, the predator must adapt to become a more effective hunter.

Hence, the correct answer would be option A.

interphase   is the cell cycle stage in which the cell acquires nutrients, creates and uses proteins and other molecules and starts the process of cell division by replicating the dna. it is the longest stage in the eukaryote cell cycle.

the following   can go wrong during interphase:   a base pair could be mismatched during the duplication process causing a mutation.   correct answer: c

explanation: