The O horizon is typically lacking in organic matter
Indicate whether the statement is true or false
FALSE
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Shifting cultivation in North America referred to what major Indigenous foodstuffs?
A) squash, wild berries, deer B) maize, tomatoes, potatoes C) maize, squash, beans, tobacco D) tobacco, fish, migrating birds E) none of the above
The United States has a higher TFR than China.
Answer the following statement true (T) or false (F)
Which of the following is NOT considered to be a potential geopolitical crisis in East Asia?
A) a nuclear Japan poised to repeat the military aggression of the 1930s and 1940s B) tensions between China and Taiwan over the sovereignty of Taiwan C) aggressive Chinese expansion into the South China Sea D) a geopolitically unstable North Korea acquiring nuclear weapons E) border disputes between India and China
The bending of light that occurs when it enters a substance of different density at an angle is called ____
A) diffraction B) reflection C) refraction D) scattering