A water mass at depth in the ocean has temperatures and salinities that are usually determined by the conditions present when the water mass was last at the sea surface.
Answer the following statement true (T) or false (F)
True
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Whether using a food crop as a source of biofuels is environmentally sustainable would have to consider all of the following, except ________
A) the corporate profits that would be made B) the impact on food supplies and prices C) the amount of water and land necessary for the crops D) the amount of fertilizers used and their impact on aquatic ecosystems E) the amount of pesticides used and their impact on biodiversity and groundwater
The average summer temperatures in the Southern Hemisphere are cooler than the average summer temperatures in the Northern Hemisphere because ____
A) Earth is closer to the sun in January B) Earth is farther from the sun in July C) over 80% of the Southern Hemisphere is covered with water D) the sun's energy is less intense in the Southern Hemisphere
Sodium chlorate, an ingredient in many common herbicides, has sodium, chlorine and oxygen atoms in the ratio 1:1:3. What is the correct formula for sodium chlorate?
A) NaCO3 B) SoClO3 C) NaClO3 D) none of these
Because lenses act like a prism to separate the colors of the spectrum, they produce a troublesome effect known as ________
A) focal distortion B) light dispersion C) the atmospheric effect D) poor seeing E) chromatic aberration