Ocean waves and currents generally form as a result of

Life forms in the Precambrian include

When precipitation at the ocean surface exceeds evaporation, the salinity of seawater

Radiometric dating is based on

Coastal lands bordering the oceans generally have

Solar radiation consists of waves principally in the

Almost all of Earth’s supply of energy comes from

The most important event during the Cambrian period was the

In the tropics, the trade winds drive equatorial ocean currents

To date relatively young rocks and materials, we use the decay of