Answer 40: d. Water lowers strength and cohesion.
Explanation: The most ideal approach to comprehend this is by taking clayey soil and adding water to it. You will see that earth without water is an intense week with great quality. On the off chance that you add water to the blend, the dirt will have lower straight however it by hitting it with the mallet, it will really be somewhat moldable. Along these lines the quality of the strength and cohesion will get lower with lack of water.
Answer 41: a. The soil expands and contracts, lifting particles and dropping them a slight distance downslope.
Explanation: Creep, in geography, slow downslope development of particles that happens on each slant secured with free, endured material. Indeed, even soil secured with affectionate turf creeps downslope, as demonstrated by moderate however determined tilting of trees, shafts, tombstones, and different articles set into the ground on slopes. So the dirt extends and contracts, lifting particles and dropping them a slight separation downslope.
Answer 42: c. The geological age of the rocks.
Explanation: Mass squandering happens when the dirt/shake particles that are endured can't be held together and along these lines slide down the outside of an edge. In this way power because of gravity pull the unconsolidated issue down the slant. The measure of water in connection to the stone/soil substance adds to this. Free shake particles will slide effectively because of water. Dirt ingests the water somewhat however in abundance can surrender. The point of the slop chooses how quick squandering can happen. A precarious incline will cause mass squandering effectively when contrasted with a delicate slant.
Answer 43: c. Road contraction
Explanation: Road compression is the most widely recognized explanation behind mass squandering. Most street development takes puts by slicing through the bedrock-leaving the newly cut roadway uncovered. On the off chance that there is a blamed territory or region that isn't well-vegetated or essentially bedrock strata with a lofty incline, mass squandering can happen. To maintain a strategic distance from this, joining is normally done which incorporates fixing the newly cut shake body surface.
Answer 44: d. sand
Explanation: The definition is "an immersed soil mass moving by liquidity down a slant" in light of the fact that "a soaked soil mass" is certifiably not a fluid. Note that both mudflows and avalanches are made out of shake, earth, and garbage. The contrast in the measure of water they contain.
