How do electromagnets differ from regular magnets?

a) they can be turned on or off

b) Their polarity can be reversed

c) Their strength can be changed

d) All of the above

Which of the following is not an example of a formal region? A States B Cellular coverage C Counties D Continents

What statement is true about earth's tectonic plates? a) they are floating on the lithosphere. b) they are floating on the asthenosphere. c) they are stable and do not move. d) they are floating on the core.

Where is the Nile river

What roads are the boundary lines for macomb county mi?

What percent of children finish school in Chile

The primary producers in freshwater and salt water ecosystems are heterotrophs. true or false

How is it recent globalization the direct opposite of China's earlier history

When was the rate of world population growth highest

What are the two largest countries in south america?

At which two locations would velocity of the stream be the greatest?