Distribution of the Earth's water. Earth is known as the Blue Planet because 71 percent of the Earth's surface is covered with water. Water also exists below land surface and as water vapor in the air. Water is a finite source. The bottled water that is consumed today might possibly be the same water that once trickled down the back of a wooly mammoth.
neoplasm, n (tumor), an abnormal mass of tissue, the growth of which exceeds and is uncoordinated with that of the normal tissues. It persists in the same excessive manner after cessation of the stimuli that evoked the change. Benign and malignant forms are recognized. See also neoplasia and tumor.
a neoplasm whose cells and organization resemble those of the tissue from which it is growing. malignant neoplasm. a neoplasm with the characteristics of anaplasia, invasiveness and metastasis.eoplastic, adj. (1) An abnormal mass of tissue, the growth of which exceeds and is uncoordinated with that of normal tissue, and persists in the same excessive manner after cessation of the stimuli evoking the change. (2) Any autonomous proliferation of cells, benign or malignant. Neoplasm classifications.