Quiz 2
Due No due date
Points 110
Allowed Attempts Unlimited
Questions 11
Time Limit None
This quiz is no longer available as the course has been concluded.
Attempt History
LATEST
Unanswered
Attempt
Time
Score
Attempt 1
3,222 minutes
0 out of 110
Question 1
0 / 10 pts
The second law of thermodynamics states that
orrect Answer
whenever energy is used, some becomes converted to a form difficult to
use to do work.
Unanswered
Question 2
0 / 10 pts As the Colorado River flows downstream, it passes through a series of
reservoirs, dams, and extraction areas for human comsumption. These
human impacts on the Colorado River result in which of the following
(Select ALL the apply):
orrect Answer
reduced river flow when the Colorado River empties into the sea
orrect Answer
increased salt concentrations in the Colorado River as it flows downstream
Unanswered
Question 3
0 / 10 pts
The First Law of Thermodynamics states that
orrect Answer
Energy may be converted but the total amount of energy does not change
2/6 Unanswered
Question 4
0 / 10 pts
The America Cancer Society estimates that an average American eats
2250 calories worth of energy every day. If the average American's
body is 15% efficient in using this energy (i.e. converting this energy
into work and bodily necessities), how many calories per day does the
average American actually use? Note: Do not include the units (cal/day)
in your typed answer since Canvas doesn't understand answers with
units.
ou Answered
orrect Answers
Unanswered
337.5 (with margin: 10)
Question 5
0 / 10 pts
In an ecosystem, the total amount of energy contained in all of the primary
producers is less than the total amount of energy contained in all of the
primary consumers.
orrect Answer
Unanswered
False
Question 6
0 / 10 pts
Which of the following are examples of K-adapted species? Select ALL
that apply:
3/6 orrect Answer
orrect Answer
Unanswered
Humans
Elephants
Question 7
0 / 10 pts
A population of deer starts with a population of 420. This population
experiences exponential growth over the next 5 years at a growth rate
of 5.5% per year. What is the final deer population after 5 years? Note:
do not include units (deer individuals) in your answer since Canvas
can't interpret units; just type in the number.
ou Answered
orrect Answers
Unanswered
553 (with margin: 1)
Question 8
Carrying capacity refers to the maximum
0 / 10 pts orrect Answer
Unanswered
number of a species that can be supported by the environment.
Question 9
0 / 10 pts
When a population overshoots its carrying capacity, resources become
limited and death rates rise.
orrect Answer
Unanswered
True
Question 10
0 / 10 pts
The conservation of matter principle is that matter
orrect Answer
Unanswered
can neither be created nor destroyed
Question 11
0 / 10 pts
Nutrients that flow into the Mississippi River and out into the Gulf of
Mexico creating a dead zone. These nutrients come primarily from the
following sources (Select ALL that apply): orrect Answer
orrect Answer
fertilizers running off of farms
manure from livestock farming
Quiz 2 Understanding Our Environment Answer Key
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