How does regolith differ from soil? What will be an ideal response?
Regolith is unconsolidated rock material that covers the land surface. Soil is regolith that includes
weathered material, water, air, and organic matter (and can support plant growth).
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Burkina Faso and the Keita project in Niger demonstrate that
A) corrective management measures can successfully reverse soil degradation. B) sustainable soil conservation efforts are impossible once soils are degraded. C) despite human efforts, natural climate cycles may prevent sustainable practices. D) desertification is a natural result of climate variation.
Of this list, which is the oldest religion?
A) Judaism B) Christianity C) Islam D) Sikhism E) Baha'i
Describe the levels of responsibility for meeting food security. At each level, list several ways food security can be improved
What will be an ideal response?
This radar image of a crater on Venus shows
A. an area of light-colored, smooth rocks around the crater. B. a central area of dark-colored hematite surrounded by light-colored feldspar. C. the roughness of the materials, but does not indicate whether the rocks are light or dark colored. D. that the crater contains dark-colored, rough rocks.