Raising which of the following requires the least land and water per kg of protein produced?
A) milk and eggs
B) eggs and chicken
C) pork
D) beef and chicken
E) beef and milk
Answer: B
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Which of the following describes a situation for which the Canadian Meteorological Service would release a warning for a severe thunderstorm?
A. Conditions are favourable for wind gusts of 90 km/h or more B. Conditions are favourable for less than 50 mm of rainfall. C. Hail less than 2 cm in diameter is occurring. D. Winds gusts of 90 km/h or more are occurring.
The appearance of a star to twinkle, or flicker, is caused by ____ of light through regions of different densities
A) reflection B) refraction C) diffraction D) scattering
If magma or lava cools quickly, the resulting igneous rock will have ________
A) very large crystals B) very small crystals C) more variations in mineral types D) more silicate minerals
The principle of continents being in a buoyant equilibrium is called
A. convection B. subsidence C. isostasy D. rebound