Earh and Space Systems

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DIAMETEREB YGRAVITYDN YBIOSPHERE DAYTIMEKAA DAYTIMEMJP ATMOSPHERE AGGAGALAXY XGLACIERHE IMOONMODEL SUNEQUATOR
1.
atmosphere
2.
axis
3.
biosphere
4.
daytime
5.
diameter
6.
daytime
7.
equator
8.
galaxy
9.
glacier
10.
gravity
11.
model
12.
moon
13.
moon
14.
phase
15.
neap
16.
time
17.
model
18.
sun