Answer:
I think its C.
Explanation:
A is incorrect because it says sunspot increases with time and that' false, it's decreasing from 1650 - 1700.
B is incorrect because it says earth tempreature increases every year, as you can see sometimes it decreases
D is incorrect because it's not clear whether climate is changing every 5 years or not
the answer is D 2.9 X10^25
It is Eris, a dwarf planet to but a bit bigger than Pluto, so the answer is D
i believe its the electron transport chain
