They have different amounts of neutrons.
Do u know why? Ok, because they are both cacbon, so they have the same amounts of protons : 6.
Isn't it nitrogen AND chlorine? Both are nonmetals, and they need to gain electrons in order to bond.
Answer: anemones cannot move very quickly, but they can sting predators. When an anemone is riding on a hermit crab's shell, the anemone protects the crab from predators.
Explanation: