The answer is a ...........................
i think A would be right if they are taking ab the scientific method
They are formed by natural processes like anærobic decomposition. They contain energy from ancient photosynthesis. They can literally be around 650 million years old.
13-13= 0, 19-13= 6, so then 0-6= -6
Answer:
so funny thing is that A man may ejaculate 40 million to 150 million sperm, which start swimming upstream toward the Fallopian tubes on their mission to fertilize an egg. Fast-swimming sperm can reach the egg in a half an hour, while others may take days.
Explanation:
so it has to swim up to the excel
