Describe what Earth would be like today if vascular plants had never developed. Use examples to support your answer.

That’s not technically a “science” question. everyone has different beliefs on how the world started. My answer would have been something about how I believe that God created the world. If your teacher decides to give you that question everyone’s answer will not be the same, that is a controversial question

it's when starlight enters our atmosphere its affected by winds in the atmosphere and densities. this causes the light from the 'stars' to 'twinkle' when seen from the ground.