Living and nonliving things in an environment, together with their interactions
Place where an organism lives and that provide the things that needs
a living part of an ecosystem
a nonliving part of an ecosystem
process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches or other animal eats plant to obtain food.
a group of similar organisms that can mate with each other and produce fertile offsprin
Group of one species that live in the same area
populations of different species living in a defined area
the study of the relationship between organisms and their environment
the number of individuals per unit area
An approximation of a number based on reasonable assumptions
the number of births in a population in a certain amount of time
the number of deaths in a population in a certain amount of time
moving in to the population
leaving a population
an environmental factor that prevents a population from increasing
largest number of individuals of a population that a environment can support
the changes that make organism better suited to their environments.
the behaviors and physical characteristics that allow organisms to live successfully in their environments
how an organism makes a living (how survives in its environment)
the struggle between organisms to survive in a habitat with limited resources
interaction in which one organism kills and feeds on another organism
the organism that does the killing
an organism that is killed and eaten by another organism
a close relationship between two species that benefits at least one of the species
a relationship between two species in which both species benefit
symbiotic relationship in which one member of the association benefits and the other is neither helped nor harmed
A relationship between two organisms of different species where one benefits and the other is harmed
the organism that a parasite or virus lives in or on
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