Ecology is the study of cells and their functions.

That is false. Ecology is the study of relations of organisms to one another and to their physical surroundings. Cell biology is the study of cells and their functions.

The study of "cells with their functions" are not Ecology. It is called Cell Biology.

Cell Biology studies and researches on the different functions and structures of the cell and centers around the idea of cell being the basic unit of life.

Meanwhile, Ecology is a "branch in Biology" that deals and studies about the interconnection between the organisms living and their environment, which incorporated both abiotic components and biotic components. Biomass, distribution, biodiversity, competition, population of organisms, etc. are all included under Ecology.  

1. a host loses nutrients to a parasite

2. a parasite only benefits when the host is alive (cause if the host dies the parasite dies with it )

3. producers to consumers

4. the tapeworm is a parasite

5. they convert energy from the sun (photosynthesis)

6. sunflower-robin (i think im 80% sure)

7. producer

8. consumer

9. prey

10. fresh water snails ( cause the green algea is the producer and the snails are the primary consumers and the small fish consumer so is the big fish)