Inactive Tutor answered 10/14/17
Tutor
New to Wyzant
No other planet besides Earth has a biosphere (layers of atmosphere). Between A and D, only Earth has a both a biosphere and cryosphere (frozen regions).
Shelby V.
asked 10/14/17Inactive Tutor answered 10/14/17
Get a free answer to a quick problem.
Most questions answered within 4 hours.
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.