The cyanobacteria changed the composition of the earth’s atmosphere by evolving oxygen in what is referred to as the Great Oxygenation Event. This also allowed the ozone to be formed and block off most of the UV rays that are destructive to genetic material. Life was, therefore, also able to exist on land other than in water.
Some individuals in the rabbit population must evolve traits that improve their survival chances
The Answer is C Gas exchange take place in our lungs
Frequent use of pesticides
