Answer:
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.
Explanation:
So, What Happens if Pollution Continues to Increase? ... Breathing air pollution hampers the functioning of lungs among healthy people resulting in respiratory inflammation and heart problems. Living in a polluted area and breathing toxic air increases the risk of cancer. Air pollution weakens the immune system
The mass extinctions that occurred 250 million years ago and 65 million years ago may have been due to gradual process or Catastrophic events.
Those are examples of ecosystem services! Hope this helps:)
Removal of introns and the splicing together of exons.
Introns are regions of the DNA code that do not code for amino acids; therefore, they need to be removed before the mRNA strand is translated. Exons are the parts of the strand that do code for proteins, so they need to be pieced together once the introns are removed.
It's called a mutualistic relationship! :)
I hope this helps!:)