Question in the picture

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.

Which of teh following would explain the importance of the trans-siberian railroad to russia's economy? (schoology test)

Read the article titled "castro resigns." why did the us impose trade sanctions against cuba in 1962?