They are the energy base of the food chain for all aquatic organisms, without them all aquatic organisms would most likely parish.
There was no sunlight, in one way or another sunlight is the source of almost all life on the surface of the earth
This would be enzymes made of proteins.
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Each organ of the body produces pangenes which travel through the blood to the reproduction organs to be given to offspring. This is of course false as proven by scientists.
Try again with the image it’s not showing nun