Define per capita income and state the formula used in measuring it

What was istanbul called before he ottomans conquered the city in the 15th century

Exactly what kind of weather conditions would a cold front produce?

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.