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small, non-pigmented plastids that occur in roots and non-photosynthetic tissues of plants. They often occur in cells that store food.
stage of photosynthesis that does not require light energy to occur.
the last part of the mammalian large intestine, which stores faeces until it can be expelled...
series of interlinked food chains by which energy circulates within an ecosystem.
unicellular fungi, most of which reproduce asexually by a process called budding.