Earth is comprised of four systems, or spheres. give one example of how a change in one of these spheres of the earth can affect one or more of the other spheres.

Why does sweden and norway have steep roofs

[ou.01jthe greatest speed with which any physical object moves is 300,000 km/soundsec. which of the following has a speed of 300,000 km/sec? a.light in water b.light in vacuum c.sound in air. d. sound in water

The graph below plots the temperature and luminosity of stars on the main sequence.