Unilateral sleep refers to the ability to sleep with only one side of the brain. Please select the best answer from the choices provided T F

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Which is an advantage to using nonrenewable resources? a. they can be cheaper. b. they can have a lower impact on the environment. c. they can be used up rapidly. d. they can contribute to global warming.

Scientists observed a rock stratum with fossil. if mollusks evolved before arthropod, where will their fossils be found.