Consider an early reef-builder of the Cambrian, the archaeocyathid. Using correct terminology for marine ecosystems,

classify this organism on where it lives, how it gets around, and how it feeds. How does the lifestyle of archeocyathids
compare with that of Cambrian trilobites? What will be an ideal response?


Archaeocyathids are benthic, sessile, suspension feeders. Trilobites, although benthic, were
mobile sediment-deposit feeders.

Environmental & Atmospheric Sciences

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Which of the following cloud types is associated with tornado development?

A) cumulus B) nimbostratus C) altocumulus D) cumulonimbus

Environmental & Atmospheric Sciences

What city in China was controlled by Britain until 1997, when it was returned to China?

A) Beijing (Peking) B) Chongqing (Chunking) C) Guangzhou (Canton) D) Hong Kong E) Lhasa

Environmental & Atmospheric Sciences

The evolution of life probably requires the presence of

A) a solid medium. B) a liquid medium. C) a gaseous medium. D) both liquid and gaseous media.

Environmental & Atmospheric Sciences

____________________ provides greater conversion efficiencies than traditional generation methods because two useful forms of energy are produced from the same fuel source.

Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences