The largest known reservoir of hydrocarbons on Earth is ____.

What is the concentration, in mass percent (m/m), of a solution prepared from 50.0 g NaCl and 150.0 g of water?

 What is the pH of a solution with = 1 × 10-4 M?

Why are harmful algal blooms, or HABs, so dangerous?

What accounts for most of the total value of world trade transported by sea?

Tiny particles of iron-bearing magnetic minerals, such as ______, act as a compass needle at mid-ocean ridges when magma erupts and cools recording Earth’s magnetic field.

The energy that drives the longshore currents is derived from ____.

 Which of the following best describes the foreshore of a beach?

In the world model of atmospheric circulation, the ____ cells are located nearest to the equator.

A sand spit forms when ____.