Question

1. the processes that change objects on earth’s surface over time are called________. a. erosion b. ice wedging c. oxidation d. weathering 4. a soil’s composition is dependent on weathering because ______. a. it makes the soil more fertile b. it contributes sediment to the soil c. it keeps the soil moist d. it moves the topsoil to other areas where it is needed more 5. all of the following except ________ can weather rock. a. sunlight b. freezing and thawing c. animals d. plants 6. how do chemical and mechanical weathering differ? a. mechanical weathering occurs when rocks are broken by physical processes, and chemical w b. chemical weathering can happen with the help of animals, mechanical weathering cannot.

Explanation:

For question 3, weathering is the process that changes objects on Earth's surface over time. Erosion is the movement of weathered material, ice - wedging is a type of mechanical weathering, and oxidation is a chemical reaction related to weathering but not the overall process.
For question 4, weathering breaks down rocks and minerals and contributes sediment to the soil, affecting its composition. It doesn't directly make soil more fertile, keep it moist, or move topsoil to other areas as its main function related to soil composition.
For question 5, freezing and thawing (mechanical weathering), animals (can cause mechanical weathering by burrowing etc.), and plants (roots can break rocks) can weather rock. Sunlight does not directly weather rock.
For question 6, mechanical weathering breaks rocks by physical processes like freezing - thawing, abrasion etc., while chemical weathering changes the chemical composition of rocks through reactions like oxidation, dissolution etc.

Answer:

1. D. weathering
2. B. it contributes sediment to the soil
3. A. sunlight
4. A. Mechanical weathering occurs when rocks are broken by physical processes, and chemical weathering changes the chemical composition of rocks.