Apes

Chapter 7 Multiple Choice Questions
Name: ____________________________________________________________ 1) Any network of relationships among a group of components, which interact with and influence one another through exchange of matter and/or information, is referred to as ________.
A)

an interchange
B)

a system
C)

an ecosystem
D)

an environmental collaboration
E)

hierarchy
Diff: 1
Objective:

7.1 Systems, ecosystems, biotic, and abiotic factors
2)

A system receiving inputs and producing outputs without undergoing any changes in size or function is said to be in ________.
A)

static control
B)

environmental balance
C)

harmonic resonance
D)

normal balance
E)

dynamic equilibrium
Diff: 1
Objective:

7.1 Systems, ecosystems, biotic, and abiotic factors 3) Cattle on an open range, in some areas, may compact fragile soils while grazing. This can damage plant roots, leading to fewer, smaller plants, which may in turn cause cattle to graze more and work harder to obtain food. This is an example of a ________.
A)

positive feedback loop
B)

negative feedback loop
C)

homeostatic system
D)

dynamic equilibrium
E)

food web
Diff: 2
Objective:

7.3 Human impacts on systems and cycles 4) The eutrophication that has taken place in the Gulf of Mexico and other locations appears to be due to ________.
A)

global warming from human use of fossil fuels
B)

pesticide use along the waterways
C)

heavy metals dumped in the sewage
D)

weather alone, because it is only obvious in the summer
E)

excess nutrients from fertilizers
Diff: 2
Objective:

7.3 Human impacts on systems and cycles

5) The physical, abiotic components of our planet can be divided into the ________.
A)

geosphere and atmosphere
B)

lithosphere, hydrosphere,