How does the mechanical energy of a rock change as it falls from a mountain?
The mechanical energy remains the same because potential energy is changed into kinetic energy.
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15
Which layer of the atmosphere contains the most water vapor?
Troposphere
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15
How do people determine if a vehicle in which they are sitting is moving?
by comparing their position to a fixed object outside the vehicle.
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15
Which is the most likely cause of tropical storms?
Warm water evaporates, rises quickly, and interacts with a colder air mass.
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15
Which applied force will cause a glass of water sitting on a countertop to move?
an unbalanced force
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15
What is one way the respiratory system and the circulatory system work together in the human body?
The respiratory system takes in oxygen, and the circulatory system delivers the oxygen to the cells of the body.
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15
Over a period of several hours, a barometer shows rapidly decreasing air pressure. What type of weather will most likely occur next?
calm, windless weather
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thief
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gift
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fairy
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banana
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15
A homozygous dominant black angelfish (BB) is crossed with a homozygous recessive gold angelfish (bb). What is the probability their offspring will be gold?
0%
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15
Which best explains why muscle is considered a tissue?
It is a group of cells working together.
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thief
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magnet
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gift
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banana
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15
How does the arrangement of the air molecules found in the troposphere compare to the arrangement of those found in the thermosphere?
The air molecules are closer together in the troposphere and are farther apart in the thermosphere.
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baam
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fairy
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15
Person X and person Y both smoked the same brand and amount of cigarettes for 20 years. Person Y develops lung disease while person X does not. Which statement best compares both people?
The genetic makeup of person X allowed for a higher tolerance to chemicals in tobacco than person Y.
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lifesaver
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15
How do a volvox and an amoeba get their food?
A volvox uses photosynthesis, and an amoeba surrounds its food.