Lessons 4 & 5 Exam (97. - 97.5 %)
Ashworth College
Lessons 4 & 5 Exam
97. - 97.5 %
Question 1 2..5 points
When ecologists study the way energy is distributed over a food chain or the rate at which
nutrients are recycled, they're engaged in in an effort to understand how the whole system
works.
a) habitat ecology
b) systemic analysis
c) ecosystem ecology
d) biosphere studies
Question 2 2..5 points
Taiga includes the largest contiguous forests on the planet and make up about percent of all
of Earth's forests.
a) 50
b) 40
c) 30
d) 20
Question 3 2..5 points
is/are our planet's thermostat and the world's chief greenhouse gas.
a) Water vapor
b) Atmospheric pollutants
c) Carbon dioxide
d) Ozone
, Question 4 2..5 points
Where can the largest tropical forest on the planet be found?
a) Amazon Basin
b) Indian subcontinent
c) Congo Basin
d) Indonesian archipelago
Question 5 2..5 points
A(n) is the natural space inhabited by a particular plant or animal.
a) habitat
b) ecoregion
c) community
d) ecosystem
Question 6 2..5 points
Hydrofluorocarbons (HFCs) have largely replaced chlorofluorocarbons (CFCs) in an effort to
reduce ozone layer depletion. What is a drawback to this strategy?
a) HFCs have an unpleasant odor.
b) HFCs are also greenhouse gases.
c) HFCs are more expensive to produce.
d) HFCs are toxic to wildlife.
Question 7 2..5 points
Two students are discussing causes of desertification in semi-arid locales. Allen maintains that
overcultivation depletes soil of vital nutrients. Audrey argues that overgrazing strips vegetation
and leads to soil erosion and deforestation. Which student is correct?
a) Both Allen and Audrey are incorrect.
b) Both Allen and Audrey are correct.
c) Only Allen is correct.
d) Only Audrey is correct.