A group of organisms of the same species that live in a specific geographical area.
Any factor that limits the size of a population.
A relationship in which two different organisms are in close contact with each other.
A large region characterized by a specific type of climate and certain types of plant and animal communities.
Replacing one type of community by another at a specific location, over a period of time.
A relationship between two species in which both species benefit.
A triangular diagram that shows an ecosystem's loss of energy, which results as energy passes through the ecosystem's food chain.
A relationship between two organisms in which one organism benefits and the other is unaffected.
A relationship between two species in which one species benefits and the other species is harmed.
A community of organisms and abiotic environment.
A diagram that shows the feeding relationship between organisms in an ecosystem.
A biome found near the polar ice caps, this biome is characterized by constant low temperatures and permafrost, land is wet and swampy in the summer and frozen in the winter.
An area where freshwater mixes with salt water from the ocean.
A biome that is found near the equator and is characterized by larger amounts of rainfall and consistently hot climate.
A biome found in the dry temperate interiors of continents. It is characterized by rich soil, moderate rainfall, a hot, dry climate, thick grasses, and herds of grazing animals.
A biome found in the northern hemisphere. It is the largest continental biome. It experiences long, cold winters; short, mild summers; and low precipitation. It is also characterized by coniferous forests. This biome covers most of Canada and Serbia.
A biome found in rivers, streams, lakes, ponds, swamps, and marshes. It is rich in plant and animals that live both in and near the water.
Temperate Deciduous Forest
A biome where trees lose their leaves in the fall. This is where we live.
A biome characterized by hot daytime temperatures, cool nights, low rainfall, and plant and animal life adapted to a limited water supply.
Two or more individuals or populations try to use the same resource, such as food, water, shelter, space, sunlight, mates, etc.
The largest population that an environment can support at any given time.
The number and variety of organisms in a given area during a specific period of time.
Living parts of the environment.
Nonliving parts of the environment.
The study of how different organisms interact with one another and their environment.
All of the populations of species that live in the same habitat and interact with each other.