An example would be "In science class, we are learning about different types of biomes as well as the organisms that live inside of them."
To answer this question, you must understand the definition of the word "biome" itself.
Hope that helped you.
I can't write you an entire essay dude...but i can help you with it.
In the introduction sum up what you are going to talk about it...The first thing you write in your introduction should be your hook, a hook is something you catch the readers attention with. it is usually a question.
For the body paragraphs explain a point and give examples.
your final paragraph should conclude what you wrote, your not trying to prove anything just to sum up everything, re state your points and conclude with a catchy ending.
I hope this helps.