How far below the surface of the mantle (r) does the block above with a density of 2.75 g/cc extend?
what is the difference in the value of r between the crust below everest and that below grand forks at 275 m above sea level ?

Create 3 equivalent fractions using the area model for 2/5create equivalent fractions using number lines for 1/2create equivalent fractions using multiplying for .3/4brainliest

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.

All of the following occurred due to the invention of the railroad except