I had this question I think it’s gamma rays
Oxygen ( and glucose ) is produced by photosynthesis and humans do cellular respiration in which we give off the CO2 plants need :)
Answer: "A muscle cramp is a sudden and involuntary contraction of one or more of your muscles"
Explanation:
Well, freshwater doesn't have the salt that a saltwater fish needs so the fish's cells(hypertonic cells) would become hypertonic which cannot mix with that fish's structure. Therefore, the fish, well, the fish would die.
I think it would have to do something with the polar and non polar
