The meninges are four chambers in the brain that are filled with cerebrospinal fluid, which circulates through them to protect the brain.
a. true
b. false
Ans: b. false
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The force necessary to fill the lungs in a mammal is provided by the
A. diaphragm. B. intercostal muscles. C. buccal muscles. D. diaphragm and buccal muscles. E. diaphragm and intercostal muscles.
In interference competition, two or more populations use the same limiting resource
Indicate whether the statement is true or false.
A flower must have one or more ____ to be able to make seeds
a. stamens b. sepals c. carpels d. stamens and sepals e. stamens and carpels
Compared to mammals and reptiles, what characteristic prevents amphibians from surviving far from water?
A. Their limbs are too weak to support their weight on land. B. Their cartilaginous endoskeleton would dry out on land. C. They do not have any lungs and cannot breathe out of the water. D. Their eggs do not have an amnion to prevent them from drying out.