a scientific study of all the interrelationships between organisms and their environment.
a relatively thin layer of earth and its atmosphere that supports life
Any living factor in an organism-environment
Any nonliving factor in an organism's environment such as oil, water, temperature, and light availability.
group of organisms of the same species that occupy the same geographic place at the same time.
All the interacting populations of differents species live in the same geographic location at the same time.
Biological community and all the nonliving factors that affect it .
large group of ecosystem that share the same climate and have similar types of communities.
physical are in wich an organism lives
role or possition of an organism in its enviroment .
act of one organism feeding on another organism .
close mutualistic parasitic , or commensal association between two or more species that live toguether .
symbiotic relashionship in witch both organism benefit .
symbiotic relashionship in wich one organism benefits and the other organism is neither helped nor harmed.
symbiotic relashionship in wich one organism benefits at the expense of another organism .