biology (saniya)

4. the branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
7. where one species, the parasite, benefits at the expense of the other, the host.
9. natural science that involves the study of life and living organisms, including their physical and chemical structure, function, development and evolution.
10. the steps scientist use to answer questions
12. eats only plants
14. breaks down dead materials

1. what you test your results against
2. the growth, abundance, or distribution of an organism or a population of organisms in an ecosystem.
3. symbiosis that is beneficial to both organisms involved.
5. eats only animals
6. which one species obtains food or other benefits from the other without either harming or benefiting the latter.
8. tested
11. eats animals that are already dead
13. results from changed
15. eats both