What are decomposers?
CH 3.2 SAVVAS TEST-Energy Flow in Ecosystems: DIGITAL

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Biology
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9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Organisms that feed on dead and decaying matter, breaking it down and recycling nutrients back into the ecosystem.
2.
FLASHCARD QUESTION
Front
What is the 10% rule in energy transfer?
Back
About ten percent of the energy at one trophic level is passed to the next trophic level.
3.
FLASHCARD QUESTION
Front
What does an ecological pyramid of biomass represent?
Back
The total mass of living matter at each trophic level, measured in grams or kilograms.
4.
FLASHCARD QUESTION
Front
What do the percentages in an energy pyramid represent?
Back
The relative amounts of energy contained by the organisms in each trophic level.
5.
FLASHCARD QUESTION
Front
What type of organisms do all food chains and food webs begin with?
Back
Primary Producers.
6.
FLASHCARD QUESTION
Front
Define autotrophs.
Back
Organisms that produce their own food using sunlight or chemical energy, such as plants.
7.
FLASHCARD QUESTION
Front
Define heterotrophs.
Back
Organisms that cannot produce their own food and must consume other organisms for energy.
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