Who argued that "the power of population is infinitely greater than the power of the earth to produce subsistence (food) for man (people)"?

Chris would like to conduct a study on the effectiveness of a new substance-abuse treatment program. he has a sample of participants go through the program and he uses as a comparison group people who did not volunteer for the program but were eligible. chris has used a(n) design for his study.

Which of the following are ways that people in democracies can take part in politics and gonverments

How will you raise money to equip an army and build a navy. mention specific ideas