Are there more autotrophs or heterotrophs in a ecosystem

Compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, describe the parts of a cell and their primary function.

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?

Which to produce involved from a symbiotic relationship of organisms which resulted in eukaryotic organisms contain chloroplast