ENWC 201 Final Canvas Quizzes; Questions and Answers 100% Solved
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ENWC 201 Final Canvas Quizzes; Questions and
Answers 100% Solved
chronic wasting disease (CWD) is
a. caused by an infectious fungus which causes bats to wake up in the middle of the winter,
wasting energy, and eventually killing them
b. caused by a non-infectious heavy metal toxin that bioa...
ENWC 201 Final Canvas Quizzes; Questions and
Answers 100% Solved
chronic wasting disease (CWD) is
a. caused by an infectious fungus which causes bats to wake up in the middle of the winter,
wasting energy, and eventually killing them
b. caused by a non-infectious heavy metal toxin that bioaccumulates in bird stomachs until the
bird is no longer able to digest food, causing it to waste away
c. caused by an infectious misfiled protein, or prion, that creates vacuoles in a deers brain and
alters their behavior to the point that they slowly die from starvation
d. a form of mange that causes bears to lose all of their fur, thus chasing their appearance to
look much skinner than normal Answer-c
starvation is not considered a disease as it is not infectious and thus can not be "transmitted"
from one animal to another
a. true
b. false Answer-b
brown tree snakes in Guam are an example of
a. an introduced commensal which is affecting bird species by improving the resilience of other
reptiles to chytrid fungus
b. an introduced ecosystem engineer that is changing bird habitat by dispersing tree seeds and
altering canopy cover
c. an introduced competitor which is affecting birds on guam by eating the same spider species
that they birds rely on
, ENWC 201 Final Canvas Quizzes; Questions and
Answers 100% Solved
d. an introduced predator species that is affecting populations of birds directly through
predation Answer-d
zebra mussels were carried into the great lakes in the ballast water of tanker ships. they were
brought frequently, arrived in good health and in large numbers. this is a high ______ ______
meaning they are more likely to be a successful invasive species
fill in the blank Answer-propagule pressure
starlings were introduced to the US by shakespeare enthusiasts. the birds have since spread
across the US and are out-competing native birds (like the blue bird)
a. true
b. false Answer-a
although greenhouse gases are important for maintaining earth's climate, as we increase the
amount of them in our atmosphere we are causing more long wave radiation to be
captured/reflected back to the earth, thus causing warming. similar to how a greenhouse works
for plants
a. true
b. false Answer-a
increasing levels of acidity in our oceans (lower pH) is leading to an increase in the availability of
free calcium, we will thus see an increase in the number of small organisms such as diatoms and
dinoflagellates that are at the bottom of the food web
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