hey anybody here 16,17,18 and above, I ain't talking to kids now and please anybody got discord, hangouts and insta​

What could cause a production possibilities curve to move down and to the left? a.) a nation loses land after being defeated in a war. b.) an increase in the use of computer technology speeds up production c.) a baby boom 20 years ago results in a large number of young adults in the population today. d.) thousands of investors from overseas invest money in a nations economy.

True or false: it is generally better to concentrate your exercise time on the weekends only for maximum aerobic benefit.

Do you think it ethical and appropriate for marshall to have used himself as a test subject and swallowed a sample of helicobacter pylori? what precautions did he take? would you do it? why or why not?