I think, especially when you're in college, each book that you're reading tends to tell you who you are.

Around 2000 different types of plants are used by humans to make food.

Some plants are carnivores, gaining nutrients by eating various small insects and spiders. A well known example of a carnivorous plant is the Venus Flytrap.

Metals are strong and are useful for making tools, buildings, bridges and other structures where strength is important.

Gold is shiny and doesn't corrode, this means it is a great metal for making jewelry.