ecosystem

from this post onwards, it will be about ecosystem. here is the question:


"how does the energy transfer and nutrient cycles in ecosystem affect the extintion of animals such as the dodo bird?"

it will be break up into different parts
1)defintion on ecosystem
2)information about food web
3)primary consumers and secondary consumers
4)energy transfer in ecosystem
5)extinction of animals
6)focus on how did the dodo bird extinct