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a clear solution of calcium hydroxide.
a biological membrane that separates the interior of all cells from the outside environment.
a microscopic hair-like extension of the cell membrane of the epithelial cells forming the outer...
large spongy organs in which gaseous exchange takes place in vertebrates (with the exception of...
coiled thread-like structures of DNA and histone, which is a protein, in the cell nucleus. They...
the loss of water vapour from the aerial parts of a plant through stomata or lenticels.