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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banana
Go to last place!
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seesaw
Swap points!
Okay!
rocket
Go to first place!
Okay!
baam
Lose 20 points!
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heart
Other team wins 25 points!
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star
Double points!
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fairy
Take points!
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25
lifesaver
Give 10 points!
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15
How do the digestive system and the circulatory system work together in the human body?
The digestive system extracts nutrients from food, while the circulatory system transports those nutrients.
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15
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
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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15
Which layer of the atmosphere contains the most water vapor?
Troposphere
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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
Which statement describes the organization of living organisms?
All organisms are composed of one or more cells, which are the basic units of structure and perform essential life functions.
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15
Why are scientists concerned with ozone depletion in the upper atmosphere?
because it allows ultraviolet radiation to reach Earth's surface
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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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seesaw
Swap points!
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rocket
Go to first place!
Okay!
gift
Win 20 points!
Okay!
thief
Give points!
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25
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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eraser
Reset score!
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shark
Other team loses 5 points!
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rocket
Go to first place!
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banana
Go to last place!
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15
In which way are a euglena and a volvox different?
A euglena is an individual cell, while a volvox is a colony of cells.
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15
Earth's atmosphere is mainly composed of which gases?
