Why could Ella be depressed?
A. Because she can't lose weight.
B. Because she made new friends.
C. Because Spring Break is coming.

Which statement is a good description of a model? a) models are a description of nature based only on one or two variables. b) models are testable ideas but they are not very to most people. c) models are a description of nature that predicts more accurately than real events. d) models are an approximiation of a real system that omits all but most essential variables in a system.

Amember of congress acting as a trustee casts a vote for a bill based on his or her

Which are components pf a political party? why do we need political parties give reason.