How long does it take long currents to complete their circuit of the globe?

What are some of the impacts of humans on the earth?

What gigantic island is primarily in the arctic circle?

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