To improve its standard of living in nations economy must do

If a swimmer is traveling at a constant speed of 0.85 m/s, how long would it take to swim the length of a 50m olympic sized pool?

Why do you think that historians use the word “revolution” to describe important changes in agriculture? how did the green revolution and other agricultural revolutions change the lives of billions of people? < < read less

What idea did most of the founding fathers, despite their differences, agree with?