Answer:
there are many..
Explanation:
wheel and axel are two type of forces in simple macine
Answer:
Early cyanobacteria in stromatolites are thought to be responsible for increasing the amount of oxygen in the primeval Earth's atmosphere through their continuing photosynthesis. They were the first known organisms to photosynthesize and produce free oxygen.
Hope this helps!!!
Answer:
this is just evolution like the birds on the Galapagos islands also I don't see the question
I believe it's the first one.
