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 is an abnormal clump of cells in the body. While the medical term neoplasm is often used in relation to cancer, it can also refer to benign or non-cancerous health conditions. Neoplastic cells simply refers to the cells that make up that neoplasm or clump of cells. In the human body, there are trillions of normal, healthy cells.