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a summation of all the organisms of the same group or species, which live in a particular geographical area
- huge growth in a graph where the line make a j-shaped curve when population is graphed against time
- things that prevent a population from growing any larger
- not enough food water shelter
the number of people, other living organisms that a region can support without environmental degradation
the role and position a species has in its environment; how it meets its needs for food and shelter, how it survives, and how it reproduces
an animal that naturally preys on others.
cougar to deer
the organism which the predator eats
fish to bear
the way two organisms of different species exist in a relationship in which each individual benefits from the activity of the other
oxpecker and the rhinoceros or zebra
an organism that lives in or on another organism and benefits by deriving nutrients at the host's expense.
tapeworms, fleas, and barnacles
a contest between organisms, animals, individuals etc., for territory, a niche, or a location of resources and goods mates
use natural resources at a rate that the Earth can renew them
the period of time required for a quantity to double in size or value
a measure of human demand on the Earth's ecosystems
upsetting the ecological balance by depleting natural resources
an ability or capacity of something to be maintained or to sustain itself.
Ecosystem services are the benefits experienced by organisms, including humans, that are provided by sustainable ecosystems
Ecosystems services include: the provision of clean food and clean water, the cycling of nutrients, the conversion of atmospheric carbon into biomass (which influences climate and weather)
the turning of a non-desert area into a desert due to change of climate or from unsustainable farming due to lack of water
a form of tourism that harms the ecosystem and involves recreational activities that depend on the earth's sustainable ecosystem