Answer:
Umm could u write out the question?
Explanation:
There were more organisms born than resources can support.
And this led to struggles between organisms and later only the fittest animal survived :)
Answer:
Greenhouse gases keep our planet livable by holding onto some of Earth's heat energy so that it doesn't all escape into space. This heat trapping is known as the greenhouse effect.
Explanation:
A what you expect to happen