In classification, a class is a group of related or similar organisms. A class contains one or more orders. A group of similar classes forms a phylum. The classification of organisms helps in the their study. A club is the thickened end of a butterfly's antenna .
Many reptiles are ectothermic.
The two animals are called commensals. Commensalism is a type of symbiosis . These organisms interact and influence each others survival. An optic nerve then carries this information to the insect's brain. A consumer is a living thing that eats other living things to survive.