Group 1:
1. What is the difference between inner and outer planets?
2. In what form is water found in earth?
Group 2
1. What does the earth orbit?
2. How long does it take earth to make a spin around its own axis.
3. Is the crust moving or stationary? Why?
Group 3
1. What is the space around the earth called?
2. What does it consist off?
3. why is earth unique?
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