The ________ refers to a huge expansion in biodiversity 530 million years ago, which also marks the first appearance of invertebrate organisms
A) Great Ordovician Biodiversification Event
B) Cambrian Explosion
C) Rise of Reptiles
D) Great Dying
Answer: B
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Differentiate between point source and non-point source pollution. Give an example of each and describe a current piece of legislation or policy designed to control each type of pollution
What will be an ideal response?
An increase in the amount of high altitude, thin clouds would
A) cool the planet in a process called cloud-albedo forcing. B) warm the planet in a process called cloud-greenhouse forcing. C) have no effect on the planet's temperature because insolation is constant.
In general, which of these cyclonic disturbances would have the lowest pressure?
a. tornado b. hurricane c. middle latitude cyclone d. water spout
GPS units
A) accurately allow determination of location anywhere on or near Earth's surface. B) are a metric version of longitude and latitude. C) are not available to the public; they are only available to the military and other government agencies. D) have little practical use in physical geography. E) are th of a Greenwich Precision Second.