Classify each type bifunctional molecule as being a material used in the synthesis of polyesters, nylons, both, or neither.​ dialcohol
diester
dinitro
diacid
diamine
diether

Which position represents spring in the southern hemisphere? a) b) c) d)

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)

Which characteristics affect ocean water’s temperature? check all that apply. depth location mass salinity waves