Definitely amylase and nucleus....
Jellyfish, corals, and hydras belong to the group of animals called cnidarians.
The main characteristic of this group is that all of its members possess specialized cells called cnidocytes which often produce venom and have a role in capturing the animals prey.
All organisms in a certain area make a *community*
Enzymes reduce the activation energy allowing chemical reactions to occur in living things.
Thomas Edison!! inventid the light bulb