Air enters your lungs when you inhale because the pressure inside your lungs and the pressure outside are balanced. True or False

Two things that biomedical has invented or innvated

How much energy is made when a pice of wood burns. how do you know

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.