a. what is the difference between mechanical weathering and chemical weathering? b. what are three types of…

a. what is the difference between mechanical weathering and chemical weathering? b. what are three types of eroding action by water? c. what factors contribute to soil fertility?

a. what is the difference between mechanical weathering and chemical weathering? b. what are three types of eroding action by water? c. what factors contribute to soil fertility?

Answer

Brief Explanations:

a. Mechanical weathering breaks rocks physically (e.g., by temperature changes), while chemical weathering changes rock's chemical composition (e.g., through oxidation). b. Three types of water - erosion are splash erosion (rain - drop impact), sheet erosion (thin layer removal), and gully erosion (deep channels formation). c. Factors contributing to soil fertility include organic matter content, soil pH, availability of nutrients (N, P, K etc.), soil structure, and presence of beneficial microorganisms.

Answer:

a. Mechanical weathering is physical break - up, chemical weathering is chemical change. b. Splash erosion, sheet erosion, gully erosion. c. Organic matter, soil pH, nutrient availability, soil structure, beneficial microorganisms.