Which of the following molecules do X and Y represent? A) simple sugar B) amino acid
D) hormone
C) fat

Which statement is a reason to support population regulation? a) it is unethical for us to control birth control rates b) humans have the freedom to produce as many children as desired c) the gap between the rich and poor has been narrowing since 1960 d) billions more people on the earth will intensify many environmental and social problems

How would you reduce the volume of gas

Identify a specific example for each type of technology