Shared Flashcard Set

Details

Title

Cycles of Matter

Description

3.4

Total Cards

Subject

Biology

Level

9th Grade

Created

11/17/2013

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Additional Biology Flashcards

Term

Denitrification

Definition

Soil bateria convert nitrogen compounds (nitrate) back into nitrogen gas

Term

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Definition

Closed loops powered by flow of energy

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Bacteria convert nitrogen gas into ammonia

Term

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Definition

Chemical substances- organisms need them to survive

Term

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Definition

Essential nutrient- can limit productivity of an ecosystem if scarce