Answer:
An association between two organisms in which one benefits and the other derives neither benefit nor harm.
Explanation:
There was no life on Earth for the first billion years because the atmosphere was not suitable for life. Earth's first atmosphere had lots of water vapor but had almost no oxygen. Later, frequent volcanic eruptions put several different gases into the air.
Explanation:
yes .....................
There would be less oxegen and also economically exploit us as 80% of things we use is from trees. we will be ruined, that's for sure.
