_______________ is the destruction of the productive capacity of an area of land.
Fill in the blank(s) with the appropriate word(s).
Desertification
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What was the source of the CO2 that suffocated 1700 people in Cameroon, West Africa, in 1986? What will be an ideal response?
Which of the following is not one of the three types of tectonic activity that causes orogensis along convergent boundaries?
A) oceanic plate-continental plate collision B) oceanic plate-oceanic plate collision C) continental-plate—continental plate collision D) oceanic plate-continental plate collision, oceanic plate-oceanic plate collision, and continental-plate—continental plate collision are all correct.
Which of the following statements is true about Bohr's planetary model of the atom?
A) The electrons orbit around the nucleus. B) It is a physical model. C) The energy difference between the orbits is continuous. D) The electrons smoothly move from one orbit to the next. E) none of the above
What substances are emitted from fumaroles?
A) Lava B) Ash C) Water D) Volcanic gases