ecosystem

2. Something happening in the physical environment such as a storm
5. A diagram that shows the amount of energy that moves from one feeding level to another
7. can make its own food from sunlight.
9. stays mostly the same over time
10. interacting organisms and their physical environment.
12. A group of individuals that belong to the same species

1. influences the survival of many other species in an ecosystem
3. maintaining the balance of the Earth's natural environment and conserving natural resources
4. The number of different species
6. An organism that makes its own food
8. An organism that cannot make its own food
11. obtains energy by feeding on other organisms.