The total number of plant and animal species that a field biologist identifies along a mountain trail is an example of ________
A) species composition
B) structural diversity
C) species evenness
D) species richness
E) genetic diversity
D
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Rapidly growing countries have an age structure that
a. forms an inverted pyramid b. has a broad-based pyramid c. shows little variation in population by age d. has a narrow pyramid e. has a relatively large postreproductive population
If participating nations continue to follow the Montreal Protocol recommendations, ozone levels should return to 1980 levels by the year 2071
Indicate whether the statement is true or false
Over a third of the surface area of many large downtown areas like Los Angeles' are utilized for automobiles.
Answer the following statement true (T) or false (F)
A ridge or strip of ground separating one drainage basin from another is termed a ________.
A. neck B. crest C. plateau D. divide E. delta