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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
the abiotic elements of the environment
B
the interactions between the biotic and abiotic
C
human impact on the environment
D
biotic components of the environment
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
omnivore
B
decomposers
C
producers
D
consumers
4) Which is the rock soil and sediments?
A
geosphere
B
atmosphere
C
biosphere
D
hydrosphere
5) Which is not true of green house gases?
A
ozone and water vapor are greenhouse gases
B
makes the earth warm enoough to support life
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
grass
B
song bird
C
hawk
D
worm
7) A niche is a
A
job or function in an ecosystem
B
a made up word
C
dance
D
home
8) Which nutrient is not normally in the atmosphere?
A
sulfur
B
phospherous
C
nitrogen
D
carbon
9) When water forms into clouds it
A
transpires
B
runs off
C
perculates
D
condenses
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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