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non-indigenous species which reproduce and spread more rapidly than indigenous species. This allows them to displace the indigenous species.
a drug that causes hallucinations.
a form of malnutrition caused by a severe shortage of protein in the diet.
liquid waste material that is discharged into a river or the sea.
elongated cells in the xylem of vascular plants that transport water and mineral salts.
an endocrine gland attached to the base of the hypothalamus, which secretes hormones that play a...