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
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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15
Which will cause an increase in the mechanical energy of an object?
increasing its potential energy
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15
What type of weather is most likely observed in an area when cirrus clouds are present?
calm weather
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eraser
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gift
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gift
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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
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 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
Which best explains why muscle is considered a tissue?
It is a group of cells working together.
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15
What causes convection currents to occur on Earth?
warm air rising, cool air sinking
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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
How is a gamete different from other types of cells in a person's body?
It has half the number of chromosomes.
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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.