Sound waves cannot travel in
A) air.
B) water.
C) steel.
D) a vacuum.
E) They can travel in all of the above.
D
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The projected increase in atmospheric temperature from 2010 to 2100, using climate change models, could be anywhere from 2oF-11oF.
Answer the following statement true (T) or false (F)
Which of the following is not an environmental control that may help determine the species which occupy an ecosystem?
a. the age of the ecosystem b. the intensity of sunlight c. the texture and chemistry of the soil d. other plants and animals
Primary plant/tree growth is characterized mainly by ________
A) change in diameter of the stem/trunk B) development of leaves that are essential to photosynthesis C) upward and downward growth due to cell division at tips of roots and shoots D) seed germination E) growth and production of wood
The boundary between air masses having different temperatures (and hence, different densities) is called a(n) ________.
A) isotherm B) front C) fog bank D) cloud