An organism is any living thing, which can include plants, animals, microorganisms, fungi, viruses

A population can consist of only one organism.

A population consists of two or more organisms of the same kind living together and reproducing in the same area (habitat)

The population size is the total number of dead and alive organisms in a population.

The population size is the total number of live organisms in a habitat.

The population size is the total number of live organisms in a population.

Population size increases when birth rates increase, death rate decrease, more organisms move into the place (immigrate),  fewer organism leave a place (emigrate) there is plentiful food, there is less predation, no disease causing deaths.

Population size increases when birth rates are more than death rates.

A habitat is a temporary home.

A habitat is a place where organisms live and interact with one another.

There are man-made habitats (zoos, terrarium, cages, aquariums) and natural habitats (pond, forest, rotting log, leaf litter corner, deserts)

Organisms in any habitat are interdependent.

Plants depend on animals for pollination of flowers only.

A community consists of two or more populations of animals living together and interacting in a single habitat.