I believe the correct answer is A. Irtysh
Answer:
a:23
b:11
c:5
Explanation:
(A)because of air temperature
(B) because of wet bulb
(C) because of low temperature
A, it is the current era, and D, it was also known as the age of mammals.
The main reason why Earth is warmer at the equator than at the North and South Poles are thats where the sunlight shines at a lot of times. The sunlight never really shines directly at the North and South Poles like it does with the equator.