What’s a example of a compound

Water. H2O

Explanation: a chemical compound is composed of many identical molecules made from more than one element, in this case Hydrogen and Oxygen.

the leaf is an organ of a typical plant, and the main functions are to complete photosynthesis and allow the plant to exchange gas, just like how we have the respiratory system. leaves have the stomata, which collects maintains co2 and o2 levels. this is necessary for cell metabolism. the leaf also collects sunlight using chloroplasts. succinctly, leaves own a pivotal role in sustaining plant life.