Solar energy is a clean, renewable energy source. once a solar plant is built there is no fuel cost only maintenance. why does solar energy not play a bigger role in energy production today?
a) the technology to make solar energy is not yet available.
b) environmental groups are against solar energy as a power source.
c) the cost of maintenance still is more expensive then all other energy technologies.
d) the original cost of a solar plant still takes too long to be recovered by future savings.
Answers: 2
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Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils
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Drag each tile to the correct location. match each trait that an organism displays to a reproductive strategy.
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Biology, 22.06.2019 10:00
Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.
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Solar energy is a clean, renewable energy source. once a solar plant is built there is no fuel cost...
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