mzyjohnson47
21.12.2019 •
Biology
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electric current travels along two identical metal wires. initially, the temperature of both wires is 30°c. after five minutes, however, the temperature in wire a increases to 40°c and the temperature in wire b decreases to 20°c. based on this information, which conclusion is most likely correct?
a.) after five minutes, wire a becomes more resistant than wire b.
b.) after five minutes, wire a becomes less resistant than wire b.
c.) after five minutes, wire a becomes a direct current and wire b becomes an alternating current.
d.) after five minutes, wire a becomes an alternating current and wire b becomes a direct current.
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Ответ:
Ответ:
Animals and plants need to get rid of carbon dioxide gas through a process called respiration. Carbon moves from fossil fuels to the atmosphere when fuels are burned. When humans burn fossil fuels to power factories, power plants, cars and trucks, most of the carbon quickly enters the atmosphere as carbon dioxide gas.
Explanation: