Plants or animals that people have introduced to a place that is not their native environment, where they outcompete native species and reproduce in great numbers, are called ____
a. xerophytes
b. invasive exotic species
c. omnivores
d. epiphytes
e. specialists
b
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This mountain range is located between the Black and Caspian Seas _________________.
Fill in the blank(s) with the appropriate word(s).
The majority of the wetlands that have been lost since the 1600s have been lost because of the development of cities.
Answer the following statement true (T) or false (F)
Cloud-to-ground lightning begins within the cloud when the localized electric potential gradient exceeds ____ volts per meter along a path perhaps 50 m long
a. 300 b. 3,000 c. 30,000 d. 300,000 e. 3 million
A karate expert executes a swift blow and severs a cement block in two with her bare hand. The magnitude is the same for the
A) impulse on both the block and the expert's hand. B) force on both the block and the expert's hand. C) time of impact on both the block and the expert's hand. D) all of the above E) none of the above