Answer:
In 1960, the U.S. Forest Service started keeping detailed records of damage caused by wildfires. ... Between 2000 and 2013, nearly 161 million acres were consumed by wildfires -- more in 13 years than in the previous 40 years, combined. ... they would have been had fuel sources been able to burn off naturally over time.
Missing: 225 | Must include: 225
Explanation:
The negative impact humans could have on an ocean ecosystem is pollution, which can lead to a mass extinction on the wildlife.
The human foot has two arches, but the chimpanzee foot has only one.
C.75 of the cell's mass is water
Buffers in our blood are able to neutralize changes in the bloods pH.