Look I have gotten too old to do this stuff. My gray matter is not what it used to be. Any help is greatly appreciated.
1. Organism, Population and community make up the_______________?
2. Parasitism, commensalism, and mutualism are examples of _______?
3. Trophi level and food chain atre parts of a _____________?
4. Ecosystems, biotic factors, and abiotic factors make up the _________?[/b]