If I have 6 blankets and put 4 to wash how many blankets do I have left ? (Please don't answer if you don't want to get spammed with Notifications) (Thank you) :)

What kinds of energy are causing chemical change as the meal is being prepared?

What river valley civilization in the plow

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