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a large tongue-shaped organ in the mammalian body which secretes hormones and digestive enzymes.
coiled thread-like structures of DNA and histone, which is a protein, in the cell nucleus. They...
specialised cells which secrete mucus, usually found together with columnar epithelium and...
unable to notice or respond to things that you would usually be aware of through your senses....
ecotourism that is carried out thoughtfully, morally and in a way that is acceptable to all...