lunes, 3 de octubre de 2011

1º Planet Earth

nineplanets

After reading the main page, answer the next questions:
1.- What is the temperature of the core of the Earth?
2.- How old is the Earth?
3.- Does the surface of the Earth change or not? Describe the changes.
4.- What are the two types of terrain in the Moon?
5.- Is the Moon older than the Earth?.

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