In a given community grass hopper eats and cat the bird?

It seems like you're trying to describe a food chain! Here's how it works:

* Grasshopper: The grasshopper is a herbivore, meaning it eats plants.

* Bird: The bird is a carnivore, meaning it eats other animals. In this case, it eats the grasshopper.

So, the correct order is: Grass → Grasshopper → Bird

This is a simplified example of a food chain. In reality, ecosystems have many different food chains that connect to each other, creating a complex web of interactions.