This type of bond occurs when you give and take entire electrons?

This is the upward motion of water that brings cold, nutrient-rich water toward the surface?

This is when you have 2 high tides and two low tides each day at the same level?

This is the apparent deflection of moving air relative to Earth’s surface

In this type of bond you share electrons unequally?

Current flow around the periphery of an ocean basin?

At the friction depth, water will flow in the opposite direction from the surface current?

What toy has been used to help understand ocean circulation?

Please explain El Nino, including the atmospheric and oceanic conditions prior to and during the event. This question is worth up to ten bonus points.

This organism has a shell of calcium carbonate, needle-like pseudopods, and its fossils can form limestone and the cliffs of Dover?