How does the matter and energy in a system naturally change over time?

A. It increases in energy.

B. It becomes more spread out.

C. It becomes more efficient.

D. It decreases in entropy.

List the electromagnetic waves in order of their increasing, (1), wavelength (2), frequency (3), wave speed

according to many anthropologists a land brigade during the ice age allowing between which two countries

Which organism was the first to develop in the absence of oxygen? A. algae B. cyanobacteria C. prokaryotic D. eukaryotic

If you put a penny in each light spot, explain which one will receive the most energy.

4x + 7y = - 23 8x + 5y = - 1

Protons and neutrons strongly attract when they

How far is Jupiter from the sun?

Steam moves into a cylinder of a steam engine at a constant pressure and does 2.34 J of work on a piston. The diameter of the piston is 3.4 cm and the piston travels 4.6cm. What is the pressure of the steam?

Identify each type of simple machine.

A car's speedometer reads 20 m/s after accelerating, from a standing start, for 25s. What was the magnitude of its acceleration?