Distanta optima dintre ochi si carte în timpul cititului este circa 40cm?

According to the law of conservation of energy, energy can neither be created nor destroyed. if this is true, why is there less energy in the top of the energy pyramid than there is in the bottom of the energy pyramid?

Has regulatory areas for thirst, hunger, body temperature, water balance, and blood pressure

What are the proteins in connectivity tissues of your foot examples of?