Grade 9 Ecology Chapter 2

All the individuals of a species of a species that occupy a particular geographic area at a certain time

Accelerating growth that produces a J-shaped curve when the population is graphed against time

A factor that limits the growth, distribution, or amount of a population in an ecosystem

The size of a population that can be supported indefinitely by the available resources and services of an ecosystem

The way that an organism occupies position in an ecosystem, including all the necessary biotic and abiotic factors

An organism that kills and consumes other organisms

An organism that is eaten as food by a predator

A symbiotic relationship between two species in which both species benefit from the relationship

An organism whose niche is dependent on a close association with a larger host organism

• When two or more organisms compete for the same resource in the same location at the same time.
• eg: Crops and weeds

Use that does not lead to long-term depletion of a resource or affect the diversity of the ecosystem from which the resource is obtained.

The period of time that is required for a population to double in size

A measure of he impact of an individual or a population on the environment in terms of energy consumption, land use, and waste production

A pattern of activity that leads to a decline in the function of an ecosystem

Use of Earth's resources, including land and water, at levels that can continue forever

The change of non-desert land into a desert; desertification may result from climate change and unsustainable farming or water

A form of tourism that is sensitive to the health of an ecosystem and involves recreational activities provided by sustainable ecosystems