A lunar eclipse occurs when the Moon passes directly behind Earth and into its shadow. This can occur only when the Sun, Earth, and Moon are exactly or very closely aligned (in syzygy), with Earth between the other two. A lunar eclipse can occur only on the night of a full moon.
Organisms is the answer to you question
Planets are massive, so we use models to easily view our solar systems in schools and homes.
Carbon is very important because Trees take it (Co2) in in order for oxygen to be produced.
All plants for the most part take in Co2 so that they can produce oxygen,
and we need that oxygen to live , to pump blood into our lungs so we can roam around.
It is basically one of the main components of our every day life on Earth.
I really hope this helps you a lot.