The axis is an imaginary line going through the earth so the way the earth is "tilted" would tell you,for example, if the northern hemisphere is tilting toward the sun, it will be summer in the northern hemisphere.
That's 11 to 20 lbs. (about 5 to
9 kg)
The first, second, and fourth statements are correct.
The growth of plants and formation of land mammals characterized the paleozoic era.
