What keeps tectonic plates from moving??

For tectonic plates to stop moving, the Earth’s mantle will have to be too cold for convection to occur.

Explanation: If that were to happen, then it means the Earth’s outer core has likely solidified. Normally a liquid layer, the outer core, transfers heat between the inner core and the mantle.

typically, most spiders possess eight eyes. however, others have as many as 12, and some don't have any. these eyes are for detecting light from dark, deciphering shapes and for gathering their prey.