A backyard pond has 5 kol (goldfish), rocks, lily pads, water, algae, and a water pump. Which parts of this ecosystem would be the non-living parts:
Which parts would you consider to be a population?
Which parts would you consider to be a community?

Non-living/abiotic parts of this ecosystem would be the water, rocks, and water pump.

The 5 Koi fish would be considered a population as they are a group of individuals of the same species living within an area.

The fish, the lily pads, and the algae would be considered a community. All of these organisms are interacting with each other to make the community healthy.  

hope it mark me as brainlieast.