The Bridge V Learning Edition 1 ; our solar system | Page 7

Earth
E arth i s th e o nl y pla ne t in the S ola r S ys tem th a t h as l iqu id wa te r on i ts
s u rfa ce , sig nifi ca n t amou n ts of o x yge n in th e a ir an d mod e ra te temp e ra tu re s . It
o rbi ts the Sun on ce a ye a r. Its s ta ble axi s (i ncli ne d 2 3 de g re es ) re sul ts i n
s ea so ns . Fu rth e rmo re , i t i s th e on l y cel es ti al b od y o n whi ch we h a ve fo un d life
s o fa r.