True or False: Infectious diseases can not spread from person to person.
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15
Our muscles need to work in pairs to make the bones move. One muscle contracts and the other _______________ to allow us to bend or straighten our arms and legs.
The other relaxes
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15
What is the name of the bone in the upper arm?
The humerus
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15
Animals with a backbone are called what?
Vertebrates
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15
To help us move, the muscle will __________________, or tighten.
contract
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15
How is an exoskeleton useful to an animal?
Exoskeletons support the animal's body and protect the creature from predators, water, and drying out.
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15
What is the name of the part of the skeleton that protects the brain?
Skull
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heart
Other team wins 15 points!
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15
What part of the skeleton protects the heart and lungs?
The rib cage
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Can infectious diseases be passed from animals to humans?
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Look at the dot plot and tell me how many students spent 4 hours on homework last week.