How did stromatolites contribute oxygen to the early atmosphere? through methane degradation
through photolysis
by weathering of rocks
through photosynthesis

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds

they vary. it used to be meat, grain, bread, candy, beverages, donuts, and fruits/vegetables. now they added exercise in.

може ли да зареждате повече информация, моля

answersilicon (si); oxygen (o);