Reproductive isolation must happen
Answer:
a.
Explanation:
Engery is the driving force of the oxygen cycle is photosynthesis itself, which is responsible for the creation and maintenance of earth's atmosphere.
The correct option is D.
Wind has some advantages which makes it suitable as a source of energy but it also possesses some disadvantages which reduces its potentials as a viable source of energy. For instance, large expanse of land will be needed to construct wind farms and this may not be feasible especially in populated areas. Another disadvantage is that electricity production will be depended on the availability of wind, when there is no wind, there will be no electricity.
Answer:
Sympatric speciation.
Explanation:
Sympatric speciation is a type of speciation that occurs when 2 types of groups of the common species live in the common geographic location, but they grow differently until they can no longer interbreed and are known as different species.
This speciation can occur in different types of species such as bacteria, the apple maggot fly, and cichlid fish, but it is difficult to tell when this speciation is happening or has occurred in nature. There are four types of speciation occurs:
1) Symmetric
2) Allopathic
3) Parapatric
4) Peripatric.