A mechanical wave is traveling through medium A. When the wave enters medium B, it speeds up. Which of these statements is true about medium A and medium B? 1.Medium A is a solid and medium B is a gas.
2.Medium A is a liquid and medium B is a solid.
3.Medium A is a gas and medium B is a vacuum.
4.Medium A is a vacuum and medium B is a liquid.

ummmthings that are different in peru than in the united states:

1. granola bars: they are not made of granola. they are made of quinoa and other grains that remind me of the millet i feed my birds at home. they have the texture of styrofoam but are cheap and comparatively healthy.

el español es un idioma heromoso : )

el transporte público es bueno. los autobuses siempre llegan a tiempo.