What is the temperature at a depth of 500 km?

How do convection currents form underwater mountains?

Ahis which describe the horizons in a soil profile? check all that apply. horizon a is mineral deficient. bedrock lies below the soil layers. te horizon o forms from organic material, horizon b undergoes the least amount of change. horizon c is least affected by the soil formation process.

In which horizon of soil profile is prevent material usually found