Answer:
The sea affects the climate of a place. Coastal areas are cooler and wetter than inland areas. ... In the summer, temperatures can be very hot and dry as moisture from the sea evaporates before it reaches the centre of the land mass
Endemic diseases result in a decreasing population, so with that said you can rule out choices B and D.
Among the two left, letter A is the most appropriate answer. Not all endemic diseases have an effect on the number of children a population will have. So if we are speaking about endemic diseases in general, the answer is:
A. Endemic diseases can result in decreasing population numbers: many people die form diseases, and others move away from or avoid moving to places where diseases are rampant.
That is definitely Federalism.
The layer of the sun that radiates most of the light that reaches Earth is called the photosphere.
I hope this helps!