Mass killings and genocide
It definitely would not be the first answer! The other two answers I can see why someone would get stumped on. I believe it's C, when your talking about a decade you don't add a apostrophe. Hopefully this helps xx
Answer:
y=5x+10. y=5x+10 y = 5 x + 10
i think this could how i dont know tho
Human activities
The extinction is still happening right now and is called the holocene extinction
