Mass extinctions can be caused by different events, such as ____
A) ?extended absence of volcanic eruptions
B) ?asteroids colliding with Earth
C) ?steady climate conditions lasting millions of years
D) ?stable atmospheric conditions that lead to competition of rare gases
B
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The arrangement of the hydrogen and oxygen atoms in a water molecule causes the water molecule to ________.
A. orient in only one direction B. lose heat rapidly C. slide past other water molecules D. be polar E. have a lattice arrangement in the gaseous state
If you just want to go for a swim in a meandering river and want to find a sandy beach, where is the best place to look for your swimming hole?
a. a point bar on the inside bend of a meander outside bend of the meander loops b. a cut bank c. a point bar on the inside bend of a meander
Most of the population north of the African Transition Zone follows __________, and most of the population living south of the zone follows __________.
Fill in the blank(s) with the appropriate word(s).
What is the significance, in terms of geological time, of the word "temporary" in temporary base level? What will be an ideal response?