 |
(1412)
north america,
antarctica,
europe,
asia,
africa...
|
|
(3)
crust,
core...
|
|
(1700)
polar,
global,
mid-latitude,
northern hemisphere,
western hemisphere...
|
|
(73)
solar region,
earth magnetic field...
|
|
(647)
atlantic ocean,
southern ocean,
pacific ocean,
indian ocean,
arctic ocean...
|
|
(325)
troposphere,
boundary layer,
sea surface,
land surface,
stratosphere...
|
|
|
