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$500
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$300
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$100
A tick sucks blood from a dog. In
this relationship, the tick is the ___
and the dog is the ___.
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

A: parasite, host
C: host, parasite

B: parasite, prey

$100 Question
D: prey, parasite
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Nature’s recyclers are
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
A: predators

C: producers

B: decomposers

$200 Question
D: omnivores
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The base of an energy pyramid
represents which organisms in an
ecosystem?
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
A: scavengers

B: herbivores

C: producers

D: carnivores
$300 Question
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How energy moves through an
ecosystem can be represented by
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

A: food chain

C: energy pyramid

$500 Question
B: food web
D: all of the above
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An organism’s ____ is defined as the
environment in which it lives.
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A: niche

B: habitat
C: social structure

D: ecology


$1,000 Question
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Which of the following is an biotic
part of the desert?
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
A: cacti

B: temperature

C: sand

D: both b and c
$2,000 Question
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The old adage, “birds of a feather
flock together” describes which level
of organization?
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
A: an ecosystem

C: an organism
B: a population


D: the biosphere
$4,000 Question
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___ is the source of energy for
almost all living things.
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
A: sunlight


C: soil
B: water

$8,000 Question
D: food
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A symbiotic relationship in which
both organisms benefit is called
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
A: commensalism

C: mutualism


$16,000 Question
B: parasitism
D: organism
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Two species of insects that feed on
the same leaves of the same rare
plant are engaged in
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
A: commensalism

C: mutualism


B: parasitism
D: competition
$32,000 Question
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When a population grows larger than its
carrying capacity, limiting factors in the
environment cause the population to
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

A: decrease
C: stay the same
$64,000 Question

B: increase

D: undergo
coevolution
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Water changes from a liquid to a
vapor during
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
A: decomposition

C: evaporation

B: precipitation

D: respiration
$125,000 Question
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Bacteria are essential to
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
A: photosynthsis

C: combustion

B: evaporation

$250,000 Question
D: nitrogen
fixation
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The pioneer species on bare rock are
usually
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

A: ferns
C: mosses


$500,000 Question
B: lichens
D: pine trees
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Organisms need nitrogen to
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
A: build sugars

C: build protein
and DNA

B: breathe
D: break down
carbon molecules

$1,000,000 Question
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$1 MILION