What is one situation that can be caused by both nature and human? a.) forest fires b.) the burning of fossil fuels c.) the removal of trees for lumber

Hey there,

One situation that can be caused by both human and nature would be A: Forest fires.

All forest fires need to start is a very small fire. As most trees are very flammable and can catch fire easy. This can be by humans such as a match or a cigarette. Or by nature maybe a lightning strike to start a small fire that would turn into a large one.

B: Would be incorrect because fossil fuels is done by humans. We use it as gas and fuel for various things. And cannot be done randomly by nature.

C: Would be incorrect because humans often resort to large deforestation to get lumber for wood. Usually for houses or other building objectives.

Hope this helps!
Brainliest is always appreciated if you feel its deserved!

A- forest fires can occur naturally, caused by lightning and whatnot. they can also be caused by people throwing cigarettes and other stuff in dry land, 

Often used as the geographical dividing line between northern and southern China is the Qinling–Huaihe Line (lit. Qin Mountains–Huai River Line

I hope this helps!

Brainliest if/when u can!