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| Chapter 4 |
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bacteria
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tiny living things
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balance
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in equal strength
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categories
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groups or types of things
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cellulose
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a basic substance in nearly all plants cells
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decay
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rot
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delicate
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easily broken or hurt
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enriched
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added good things to
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essential
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necessary, required
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fungi
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organisms that feed on living or dead plants or animals and cannot survive apart from them
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harmful
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causing hurt or damage
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natural
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formed by nature
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nuclear reactors
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machines used to make and contain nuclear reactions
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organisms
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living creatures
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raw materials
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things in a natural state, not manufactured
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recycled
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processed to be used again
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reduce
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make smaller in size or weight
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rot
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break down, usually after death
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species
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groups of living things
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theory
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an idea or argument that something is true
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vital
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most important, absolutely necessary
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woodland
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a forested area
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