Why is there widespread uneasiness and confusion when there is more than enough food to supply

A．The woman worked hard and was given an award.
B．The woman helped the man succeed.
C．The man is thankful to the woman for her assistance.
D．The man deserved the award.

A．Its chemical elements must be studied.
B．Its temperature must be lowered.
C．Big spaceships must be built.
D．Its atmosphere must be changed.