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Ecology Ch 3
Test Description: Ecosystems how do they work
Instructions: Answer all questions to get your test result.
1) Ecology is the study of
A
human impact on the environment
B
biotic components of the environment
C
the abiotic elements of the environment
D
the interactions between the biotic and abiotic
2) The amount of the earth’s surface covered by land
A
25%
B
90%
C
75%
D
50%
3) Organisms that complete the final breakdown and recycling of organic materials from the remains of all organisms are the
A
decomposers
B
omnivore
C
consumers
D
producers
4) Which is the rock soil and sediments?
A
biosphere
B
hydrosphere
C
geosphere
D
atmosphere
5) Which is not true of green house gases?
A
makes the earth warm enoough to support life
B
ozone and water vapor are greenhouse gases
C
has decreased since humans have increased carbon dioxide, methane, and nitrogen into the air
D
warm the lowwer atmosphere and the earths surface
6) Which of the following is a producer
A
song bird
B
hawk
C
grass
D
worm
7) A niche is a
A
job or function in an ecosystem
B
a made up word
C
home
D
dance
8) Which nutrient is not normally in the atmosphere?
A
phospherous
B
nitrogen
C
sulfur
D
carbon
9) When water forms into clouds it
A
runs off
B
condenses
C
transpires
D
perculates
10) Which is a way humans impact the carbon cycle?
A
cause plant overgrowth in streams
B
create acide rain from smelting
C
add more into the atmospher by burning fossil fuels
D
provide run off into waterways
*select an answer for all questions
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