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Physics 18 Online
OpenStudy (anonymous):

1. why is earths temperature just right for life ? ( 1point ) 1.earths core is hot enough to heat the earths surface 2. earths magnetic field creates suitable temperatures on earths surface 3.earths crust is warmed by hear from the sun 4 . earths atmosphere traps heat from the sun , which makes earths temperature suitable for living things

OpenStudy (anonymous):

The atmosphere is keeping temperature relatively constant. On planets where there's no atmosphere, there are huge day/night fluctuations. Say, on the Moon it is raising to +200 during the day but dropping to -100 at night.

OpenStudy (anonymous):

Life is based on water, so, obviously, we need it to be in liquid form.

OpenStudy (anonymous):

so which answer would that be ?

OpenStudy (anonymous):

#4

OpenStudy (anonymous):

thanks :)

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