What is an example of potential energy and kentic energy?

An example of potential energy would be a roller coaster climbing a hill because it has the energy stored in it.

The roller coaster uses kinetic energy when it goes down the hill so there is now less potential energy and more kinetic energy.

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.