Tugas Ekologi "Condition and Resources"

In ecology, what determine the distribution and abundance of species? 

In part, their tolerance of conditions and thei need for certain resouces that determine the distribution and abundance of species or organism. Condition is abiotic environmental factor that varies in space and time and affects the performance of organism. Resource is all things consumed (used up) by organism. For the example: The death of fish in Medali river, Puri District, Mojokerto Regency, from that problem, we can determine the conditions: pollutant consentration (liquid factory waste) and pH; and the resources: food, water (space) and O2.