What organisms do you want your poster to show? What ecosystem do you want your poster to show? Make sure you state what organisms you have and what ecosystem you have (are you going to show a forest, desert, etc).
Think about adaptations. How is your poster going to show adaptations in the organisms? For example, if you have a bear in an ecosystem, are you going to show it hibernating? Explain how you want your poster to show adaptations.
How does your poster show biodiversity? What parts of the poster show it?
Choose two of the organisms that you drew (plant or animal) and explain the adaptations they have that help them survive.
Why is biodiversity important? Look back at your poster for reference.