A parasite is the one who feeds on the host and the host is the one who has to deal with the parasite. basically a parasite feeds on a animal or being so i can survive<span />
Answer:Physical systems differ from social systems because a physical system refers to systems that rely on a group of physical parts to perform a function. Examples of a physical systems are solar systems or even an animals digestive system. Social systems are systems like an ant colony, wolf pack, or a town.
Explanation:
Alot of humans might not now they are even harming the systems by smoking or littering.
Birds have great vision and can see throughout night and day