A synapomorphy is a shared apomorphy that distinguishes a clade from other organisms. A clade also known as monophyletic group, is a group of organisms that consists of a common ancestor and all its lineal descendants, and represents a single "branch" on the "tree of life".
A. parasitism. The plasmodium is helped while the human host, harmed. b. mutualism. The bacteria is supplied with a living environment while the host human is supplied with vitamin K
Air polution can cause things such as asthma, lung cancer, and many other things. air polution could also cause headaches, dizziness, nausea, and more.