What is carbon dioxide used for in the chloroplasts of green plants?

In plants carbon dioxide is reduced into simple carbohydrates (e.g. glucose) with energy absorbed from the sun within the chloroplast.

This is also known as photosynthesis.

Hope this helps!

An ecosystem is in a certain area and includes living and non living plus there is weather conditions and a biome is a large amount of area with similar climate.so ecosystem is based on weather and biome is based on the average climate