Neurotransmitters is the word you're looking for.
<span>All the animals mentioned [monkey, fish, star fish, clam gecko] have endoskeleton except grasshopper which has exoskeleton. Endoskeleton is an internalised skeleton which is found inside the body of the animals which possess it while exoskeleton is a type of skeleton that is found outside the body.</span>
A successful food web needs to have all of the organisms mostly bigger than the ones that they are eating otherwise the food web wouldnt neccessarily work properly and then the food webs would all be messed up.
The answer to this question is : <span>Plantae</span>
