Produce and secrete hormones.
<h2>This Teddy Bear</h2>
<em><u>An unidentified flying object (UFO) is any aerial phenomenon that cannot immediately be identified or explained. Most UFOs are identified on investigation as conventional objects or phenomena. The term is widely used for claimed observations of extraterrestrial spacecraft.</u></em>
Answer:
Push factors “push” people away from their home and include things like war. Pull factors “pull” people to a new home and include things like better opportunities. The reasons people migrate are usually economic, political, cultural, or environmental.
Answer:
need is a necessity
desire is a luxury (something you can live without)