system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
Why are plant leaves green?


assistant
Typically, plant leaves are green as they contain chlorophyll, which is a natural compound that helps the plant to absorb energy from light. 

However, leaves are not always green - some plants naturally have pink or orange leaves, and most plants also change leaf colors according to the seasons.