Natural organic pesticides are
A. toxic to insects.
B. extracted from plants.
C. all non-toxic to humans.
D. extracted from plants and toxic to insects.
E. All of these choices are correct
Answer: D
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Where do the Himalayan Mountains lie, relative to the region of South Asia?
A) north of South Asia
B) east of South Asia
C) in the center of South Asia
D) south of South Asia
E) west of South Asia
The solar wind is ________.
A. a blast of sunspot energy B. wind blowing on the surface of the Sun C. the stream of subatomic particles flying outward from the Sun D. what causes visible dust storms on Mars E. wind blowing within the Sun's dense gas below the surface
Seismometers ________.
A. create a recording of motion detected during an earthquake B. are the paper recordings of Earth vibrations due to earthquakes C. measure seismic waves
A contour current is a bottom current that flows parallel to the slopes of the continental margin.
Answer the following statement true (T) or false (F)