Which worm has a segmented body plan?
a. Platyhelminthes
b. Nematoda
c. Roundworm
d. Polychaeta
e. Flatworm
d
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The crust beneath the world's oceans is mafic ________.
A. basalt and gabbro B. iron C. asthenosphere D. granite and rhyolite E. Answers iron, asthenosphere, and granite and rhyolite are all correct.
Which sector of the African economy has attracted the most investment money than any other sector?
a. government b. Mining c. agricultural d. financial e. manufacturing
Once a mineral resource becomes economically viable to mine, it remains that way until the majority of the deposit has been extracted.
Answer the following statement true (T) or false (F)
Clouds interacting with radiation
A. can either block or reflect the radiation, cooling the Earth. B. can both reflect and absorb the radiation, causing either heating or cooling depending on the cloud type and radiation type. C. can either block or reflect a lot of radiation, heating the Earth. D. can either absorb or refract the energy, causing global cooling and an ice age to happen. E. can both reflect and refract the energy, causing no significant change in Earth's temperature.