Glacier Bay in Alaska is a fjord whose lowlands were covered by glacial ice until around 230 years ago
As the glacier retreated, glacial till was exposed to plant colonization; remarkably
(and fortunately for generations of ecologists), the location of the tip of the retreating glacier
has been frequently documented since the late 1700's. This means that scientists have been
able to develop a detailed timeline of the changes in the plant community, or _____ in Glacier
Bay over time.
A. ecological succession
B. niche diversification
C. niche divergence
D. competitive exclusion
E. none of these
A
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What phenomena tends to increase genetic variation in a population?
A. Gene flow B. Population bottleneck C. Assortative mating D. Genetic drift E. Founder effect
Many invertebrates have separate and differentiated receptors for taste and smell, while others have a single receptor
for both.
Indicate whether the statement is true or false.In a commensalistic relationship between two species, only one species benefits without significantly affecting the other
Indicate whether the statement is true or false
DNA is associated with RNA and certain proteins forming chromatin
__________________Indicate whether the statement is true or false.