please please send me quickly onquestion number 2
Answers
1)Our location is far from any hazards.
The solar system is comfortably nestled in a safe harbor between major spirit arms,and it's nearly circular orbit helps it avoid the Galaxy perilous inner region.There are relatively few stars near the sun. Reducing risk to earth from gravitational tugs,gamma - Ray bursts or collapsing stars called supernovae.
2)The sun is stable abd long lasting star.
Stars more massive then the sun burn hotter and usually don't live long enough for planets to develop life. Less maaaive ,younger stars are often unstable and are prone to blasting their planets with bursts of radiation.
3)We have ozone layers to block harmful Ray's.
Ancient plane like organisms in the oceans added oxygen to the atmosphere and created a high - altitude layer of ozone that sheilded early land species from lethal radiation.