Answer:
The process responsible for producing most of the Earth's oxygen is known as photosynthesis
Explanation:
In this process, plants and certain other organisms convert sunlight into oxygen and other products.
Their constituent particles are different like Glucose of Starch and Fatty acids & Glycerol of Fats..,...
They group together for warmth when it's cold and they also group together in case of threats.
No
Hopes this helps you out a lot