Abiotic
Abiotic
Abiotic
Biotic
Biotic
Biotic
Answer:
We should be concerned because it affects the air we breath, and the climate of our planet. With the increased amount of gases, heat is increasing, making glaciers melt, and tempertures rise more and more each year.
hope this helps :)
Explanation:
Answer:
four billion years ago the earth had a layer of ozone gas
They have preserved areas of pollution free, ecosystems and kept them that way. eco systems are damaged by the human footprint. Also, they keep the predators and prey in balance through controlled hunting to make sure there is a balance.
The F1 generation is Ww. I hope this helped!
