An organ or group of specialized cells in the body that produces and secretes a specific substance, such as a hormone
The reproductive system has four functions: To produce egg and sperm cells. To transport and sustain these cells. To nurture the developing offspring.
Because if we use too much coal we are wasting fossil fuels and burning coal hurts the environment so the alternative energy sources provide clean energy
Fusion is the process which sun use to produce energy
The answer would be <span>insulin-dependent diabetes mellitus.</span>
