Soils vary throughout the world. Climate, elevation, plant growth; these are just some factors that influence weathering and soil formation. The tundra and the desert are alike in some ways; different in others. Both the tundra and the dessert have little available water for plant growth. Imagine you are collecting soil samples from a desert location and the tundra. What might these soil samples have in common? A) a very low amount of humus B) lots of decomposing tree roots C) very small, fine-textured soil particles D) a large amount of sand and very little silt or clay

The answer is D: A large amount of sand and very little silt or clay

Explanation: A, is the obvious incorrect answer. B, the only way you find decomposing tree roots is if there were trees in the first place. There is little available water for plant growth so it's likely trees wouldn't grow there. C, fine textured soil particles have to do with clay which would need a large amount of water available.

chemical weathering

explanation:

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.