Which ion is most abundant in seawater

A. chloride

B. sodium

C. sulfate

D. magnesium

Which unit of geologic time is the greatest span of time

Which planet spins fastest on its axis. Which planet spins the slowest?

What role does the water cycle play in aquifers, groundwater, and watersheds?

What Product is most farmed in south east Asia?

Your friend tells you that our orbit is so special that it is at just the right distance from the sun for us to be at the right temperature for life to flourish. He says that if we were even ten miles closer to the sun, we would burn up.

What is the disadvantages of the formal sector

Which of the following is not part of the definition of a mineral? A) Naturally occurring B) Organic C) Orderly crystalline structure D) Definite chemical composition

Como é formado o relevo africano?

What would you do if climate hazards were hit your local area with flooding of a local river because of a thunderstorm?

What event increased international support for the creation of a Jewish national homeland in Palestine? A. the Arab-Israeli War B. the signing of the Balfour Declaration C. the Holocaust D. the British withdrawal from Palestine