Succession
Human Activity
Misc.
Cycles
100
Why is decomposition important to life?
It helps return carbon and nutrients to the environment.
100
T/F: A larger human population has a greater need for natural resources.
True
100
True/False: constructing a dam might increase the amount of water available in an ecosystem
False
100
T/F: Glucose is a substance cycled through ecosystems
false
200
T/F: Moss is considered a pioneer species
True
200
What is resource depletion?
large fraction of a resource is used up
200
What is energy?
the ability to do work
200
Where does the majority of evaporation on Earth occur?
oceans and atmosphere
300
What is the result from the process of natural eutrophication?
pond becomes a meadow
300
How might acid rain harm the environment?
lowers pH of bodies of water
300
Which of the following strategies is most likely to help conserve natural resources? A. spraying chemical fertilizers on crops B. investing in power plants that burn fossil fuels C. leaving electronic devices running when not in use D. taking buses or subways to work rather than driving cars
D
300
What is the carbon fixing process done by plants?
Photosynthesis
400
How do pioneer species make ecological succession possible on an island formed from volcanic eruptions?
They break down rock into soil in which plants can grow.
400
How would the introduction of an exotic species most likely affect an ecosystem?
It would compete with native species for resources.
400
Riding a bike instead of a car is an example of recycling, depleting or conserving natural resources?
Conserving
400
How do living things fit into the water cycle?
The bodies of living organisms consist mostly of water.
500
Which term best describes the number and variety of organisms in a given area during a specific period of time?
biodiversity
500
Farmers often give their crops more nutrients by applying chemical fertilizers to the soil. How does this activity most likely to affect water quality in nearby water bodies?
If the fertilizers run off into the water, they can cause eutrophication.
500
How is the law of conservation of energy related to the fact that ecosystems can function as open systems?
Energy that leaves an ecosystem is still conserved in a larger system.
500
The amount of available energy decreases along a food chain in an ecosystem. How is this explained by the law of conservation of energy?
The energy is changed to a different form.
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