The first living things on Earth, single-celled micro-organisms or microbes lacking a cell nucleus or cell membrane known as prokaryotes, seem to have first appeared on Earth almost four billion years ago, just a few hundred million years after the formation of the Earth itself.
Answer:
never give up its an order if you do then so dose life
Explanation:
never give up
Answer:
Umm could u write out the question?
Explanation:
Keystone predators effect their habitat by keeping the population of animals down.
Answer:
Im not sure but I think its a
Explanation:
I learned it in class
