posted by Sarah .
can any1 answer these 2 fill in the blank questions plzzzz:
1. at the beginning the earth was __________ molten whereas the moon was ________ molten. This was because the earth is ________ than the moon.
2. Thanks to measurements on __________ rocks we have been able to find out that the earth is around _________ years old.
2. Thanks to measurements on lunar (and meteoritic) rocks we have been able to find out that the earth is around 4.55 billion years old