Answer:
49 or 50
Explanation:
It depends on who's saying.
The National Geographic Society claims Hawaii (in the Pacific Ocean) is considered part of North America.
The World Atlas identifies Hawaii as part of the continent of Oceania, not North America.
Answer:
Protostars are difficult to observe because they are surrounded by cocoons of gas and dust.
Their placement because if they're in the less economically developed part then they would have a greater effect but if they're in the more economically developed part better shops are accessible.
The hydrosphere is basically everything that is water.
Answer:
It includes three eons, the Hadean, Archean, and Proterozoic.
Explanation:
