Answer:
298.9 million years ago - 251.902 million years ago
Explanation:
It might be in the 2011 Earth Science Review Packet so maybe go check that out
Answer: fixed shape and volume
Explanation:
i took the quiz so its right
Answer:
Explanation:
i think the anwer would be that its elliptical orbit and the tilt an its axis.
Explanation:
Atoms are at their most stable when their outermost energy level is either empty of electrons or filled with electrons. Sodium atoms have 11 electrons. Two of these are in the lowest energy level, eight are in the second energy level and then one electron is in the third energy level.