Give examples of at least two species that are either extinct or facing extinction due to each of the following: 1)

destruction of habitat, 2) biotic pollution, 3) unregulated hunting and poaching, 4) deliberate pest or predator control, and
5) commercial harvesting. What will be an ideal response?


Concepts to Consider: 1) almost any species with relatively limited or very large habitat
requirements or range; 2) introduction of the zebra mussel to the American Great Lakes has
impacted native bivalve populations; goats to some of the Galapagos Islands; sheep and other
mammals to Hawaii; all of which have had impacts on terrestrial endemic species,
particularly birds; 3) the passenger pigeon, tigers, bears, rhinos, elephants; 4) prairie dogs,
Carolina parakeet, wolves; 5) imported or collected animals for sale as pets; both plants and
animals sold to collectors; and plants, particularly carnivorous plants, cacti, and orchids.

Biology & Microbiology

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Three plants that share the same niche have taproots of different length. This is an example of ____

a. character displacement b. the competitive exclusion principle c. resource partitioning d. allopatric speciation e. sympatric speciation

Biology & Microbiology

Coccolithophores are abundant in:

a. cold marine waters. b. tropical waters. c. subtropical areas. d. open ocean. e. river mouths and estuaries.

Biology & Microbiology

In which group does most of the carbon dioxide formed during aerobic respiration leave across the skin?

a. fish b. insects c. lizards d. amphibians e. snakes

Biology & Microbiology

Arrival of an action potential at an axon terminal ultimately results in the release of ________ into the synaptic cleft

Fill in the blank(s) with correct word

Biology & Microbiology