What is soil?
What will be an ideal response?
Answer: Soil is naturally occurring horizons of mostly loose mineral and organic constituents formed by weathering and biologic processes. The soil parent material is usually regolith rather than hard bedrock. Regolith is either fragments generated by physical weathering of underlying rock, or loose sediment transported from elsewhere. Soil is the part of the regolith that has horizons. Soil horizons differ from one another and from parent material by contrasting grain size, mineral composition, or both.
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The effect of climate on sediment load is a result on the interaction of all of the following factors except
A) the vegetative cover. B) the steepness of slopes. C) the amount of precipitation. D) the amount of sediment produced by weathering.
Along the shoreline of a pond, Canada geese, American toads, and grass frogs search for food while bluegill and bass prey on small fish in the shallow water. These species, living and feeding in this particular location, represent a(n) ________
A) population B) ecosystem C) community D) species
Heavy metals remain suspended in the water column indefinitely
Indicate whether the statement is true or false
Air consists of
A) a mixture of gases that behaves as if it were a single gas. B) gases that are not well mixed. C) oxygen only. D) mostly carbon dioxide and water vapor.