Answer:
The answer is D.
Explanation:
Out of the options given in the question, the best one for this example is the Positron Emission Tomography (PET Scane) because it is stated that the active regions of the brain contain high concentration of glucose.
The reason is that a substance similar to glucose is used as an indicator in PET scans to show the part of the body where the inspection is required by emitting gamma rays.
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Answer:
Heat (energy) is necessary for evaporation to occur. Energy is used to break the bonds that hold water molecules together, which is why water easily evaporates at the boiling point (212° F, 100° C) but evaporates much more slowly at the freezing point. Net evaporation occurs when the rate of evaporation exceeds the rate of condensation. A state of saturation exists when these two process rates are equal, at which point the relative humidity of the air is 100 percent. Condensation, the opposite of evaporation, occurs when saturated air is cooled below the dew point (the temperature to which air must be cooled at constant pressure for it to become fully saturated with water), such as on the outside of a glass of ice water. In fact, the process of evaporation removes heat from the environment, which is why water evaporating from your skin cools you.
Explanation:
Answer:
Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. This extra carbon dioxide is lowering the ocean's pH, through a process called ocean acidification.
Explanation:
Answer:
C. The number of differences in a specific DNA sequence of two species is multiplied by a known mutation rate to determine the number of years of evolution that separate the two species.
Explanation:
This is the best explanation of a way that a molecular clock can be used!
Placing solar panels on the roof of every home would be beneficial to the environment because solar panels produce energy but not greenhouse gases.
<h3>What are Solar panels?</h3>
Solar panels are structures composed of materials capable of absorbing solar radiation in order to be converted into electricity, thereby representing a renewable source of energy.
In conclusion, Placing solar panels on the roof of every home would be beneficial to the environment because solar panels produce energy but not greenhouse gases.
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