Population
All the organisms of one species in a particular habitat at a certain time.
Community
All organisms of all species found in a particular area at a certain time
Habitat
The place where an organism lives
Ecosystem
Community of living organisms together with their non-living environment
Biodivertsity
The amount of variation shown by organisms in an ecosystem. It’s a measure of the number of species and the abundance of each species
Biotic Factors
Biological factors afecting an ecosystem
Abiotic factors
Physical or chemical factors affecting an ecosystem