Which of the following organisms would be most likely to be preserved in the geologic record?
A) a clam with a thick calcite shell that lived on a mudflat
B) the bones of a dinosaur that lived on semi-arid plains
C) a tree
D) a mussel that clings to rock outcrops in the surf zone
A
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If you are standing on the surface of the Earth (or in a building), the air you breathe comes from which atmospheric layer?
What will be an ideal response?
Which type of instrument measures rainfall by channeling the rain into small alternating collectors located just below a funnel?
A) weighing gauge B) standard rain gauge C) tipping-rain gauge D) hygrometer
While Earth is estimated to be 4.6 billion years old, the oldest oceanic crust is approximately ________ years old
A) 1 billion B) 6,000 C) 2.5 billion D) 865 million E) 200 million
A subsistence economy is one that ________
A) meets its environmental need by over fishing lakes and rivers B) meets is environmental needs while causing ecosystem destruction C) purchases goods and services from others D) purchases resources for immediate use E) meets its environmental needs without accumulating wealth