3. Our sun is the right color spectrum to support the photosynthesis needed for plant life.
4. Earth’s atmosphere supports life (21% oxygen and 79% nitrogen).
5. Earth’s atmosphere absorbs just the right amount of light (heat) to keep the earth from freezing during the night cycle.
6. The atmosphere disperses just enough CO2 to prevent a buildup which would otherwise create a greenhouse effect.
7. The atmosphere helps shield the earth from cosmic radiation.
8. The ozone layer in the upper atmosphere blocks harmful ultraviolet radiation from the sun from reaching the earth’s surface.
9. The earth’s molten metal core heats the earth from within to keep the earth from freezing.
10. The earth’s core rotates to create a magnetic field around the earth that deflects incoming cosmic radiation.
11. The magnetic field around the earth is perfect; if it were any weaker it wouldn’t deflect cosmic radiation; if it were any stronger it would create deadly magnetic storms on the earth’s surface.
12. The earth’s 24 hour rotation is perfect to support life; a slower rotation would cause extreme winds and a faster rotation would cause extreme temperature fluctuations.
13. The 23% tilt of the earth on its axis is perfect for maintaining the surface temperature of the earth needed to sustain all life.
14. The earth’s crust is just the right thickness; any thinner and volcanic activity would increase to levels that would prevent life; any thicker and the buildup of oxygen would also prevent life.