Can someone please help me with this one. A friend tells you that people can hold their breath until they die. Use your knowledge of homeostasis and control systems to explain why this is highly unlikely to happen.

Why do we perceive objects as retaining their brightness under different lighting levels?

Ascientist wanted to formulate a pill to attack a specific type of bacteria that infects the throat. which biological component would be best to use as a model for the pill's function? bacteriocytes phagocytes complement antibodies

Can ground tissue do photosynthesis