The cultivation of aquatic organisms for food, including fish farming, that has the potential to increasingly substitute for wild-caught fish stock is called __________
Fill in the blank(s) with correct word
aquaculture
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Soil texture refers to the relative amounts of ________ in soil
A) sand, silt, and clay B) mineral content and water saturation C) water, organic matter, and minerals D) detritus and humus E) organic matter and minerals
The left to right slope of the small island on the lower right of this photograph tells us that
A) a nearby stream on the mainland must be providing sediment to support the island.
B) wave action must be minimal in this area.
C) an area of coastal upwelling must be nearby.
D) the ocean depth must be increasing to the right.
Radioactive substance A breaks down to substance B with a half-life of 1,000 years. If we start out with four kilograms of radioactive substance A, how much of those four kilograms of substance A will remain in 3,000 years?
A) 250 grams B) 500 grams C) 1 kilogram D) 2 kilograms
Explain the statement "the lower down in the food chain we eat, the greater percentage of solar energy we put to use, and the more people Earth can support" in terms of trophic levels and pyramids of energy
What will be an ideal response?