Protections the ozone layer
Maintaining animal and human food chain
Preserving potable water and making efficient use of non renewable resources
By the late 1830s, botanist Matthias Schleiden and zoologist Theodor Schwann were studying tissues and proposed the unified cell theory. The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.
Answer: Lumpectomy
Explanation: Lumpectomy is procedure in which Cancerous tissues are removed. Lumpectomy is a surgical removal of lump or cancerous tissue of breast tissue usually in the treatment of breast Cancer.
I believe the answer is C.