Arenewable energy source that relies on falling from a height levels to produce electricity is
wind power
nuclear power
hydroelectric power
geothermal power

Silica, sio2, is formed on silicon as an electrically insulating layer for microelectronic devices. silica is formed when silicon is exposed to o2 gas at an elevated temperature. at 900˚c, it takes 90 minutes for the oxygen to diffuse from the surface to form a 0.06 micron (0.06 x 10-6 m) thick layer of sio2 on

Which of the following electromagnetic waves can create ions?

How does a large body of water, such as the ocean, influence climate?