________ is the upper few feet of regolith that contains minerals and organic matter, water, and air and is capable of sustaining life
A) Horizon
B) Humus
C) Soil
D) Sediment
Answer: C
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An interrelated collection of plants and animals and the physical environment with which they react is a(n)
A) biome. B) ecosystem. C) biomass. D) biosphere.
Read carefully through the following sentence and decide which of the options is correct. Analysis of
sea surface temperatures in the Indian Ocean indicates that changes in land-use practices in the Sahel of Africa were sufficient to cause desertification. a. The word "temperatures" should be replaced by "salinities." b. The word "Indian" should be replaced by "Atlantic." c. The word "land-use" should be replaced by "farming." d. The word "sufficient" should be replaced by "insufficient." e. The word "desertification" should be replaced by "drought."
If everyone on Earth eliminated meat from their diets, there would be
A) increased demand for fossil fuels. B) increased pollution of waterways. C) increases in avian flu and Salmonella poisoning. D) a great surplus of grains.
The North Pole remains pointed towards the sun at all times, regardless of where the Earth is in its orbit
Indicate whether the statement is true or false