I am pretty sure that the answer is A<span />
The relationship between them has gone mental
Answer:
when our sun runs out of hydrogen fuel in the core. it will contract and heat up to a sufficient degree that helium fusion can begin it end composed of carbon and oxygen with the lighter hydrogen and helium layer blow of these will occurs for stars between about 40% and 800% the sun's mass
I think the answer is economic opportunity
small twigs and brush material is more likely to catch fire. this is because they are usually dead which is why they are on the ground so therefore have less water in them causing them to catch fire more easily.