Im going to use a cactus as an example. A cactus is a plant that lives in hot, dry climates, which has needle like leaves to protect itself from animals searching for water. It has a thick waxy curticle to make it hard for an animal's teeth to pierce the plant and to help keep the water in the plant (the heat makes it easier for the plants water to be used up at a quicker pace).
Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel.
