We can tell the wind strength by looking at what is moving about. What is the wind strength when large branches move, and it is difficult to use an umbrella? ​

Which are practical examples of how people in the developed world could make a big difference in how much water they use check all that apply a. use lightbulbs that use less electricity b. consider using a composting toilet that does not use water c. avoid using your telephone during peak hours d. do not read books