48 terms



Terms in this set (...)

A tropical / subtropical grassland biome with scattered individual trees, large herbivores, and three distinct seasons based primarily on rainfall, maintained by occasional fires and drought.
A region of little vegetation, either cold or hot, that receives ten inches or less of precipitation each year, long periods without rain, deserts have extreme temperatures.
Biome that surrounds the north and south poles; treeless landscape with short, cool summers, and long, very cold winters with short periods of winter sunlight, beneath the topsoil is a layer of permafrost.
Temperate deciduous forest
Characterized by warm summers, cool winters, has all four seasons, year-round precipitation and fertile soil
Biome that includes open ocean, seashore, and it covers 75% of the planet. There is a very high salinity level, and a wide variety of animals
All of the non-living parts of an ecosystem.
All of the living components of an ecosystem
Total amount of living tissue within a given trophic level.
A consumer that eats only plants.
A consumer that eats other animals
A consumer that eats both plants and animals.
An organism that can make its own food.
A biome in which the winters are cold, but summers are mild enough to allow the ground to thaw, it contains mostly coniferous forests.
An organism that is hunted, killed and eaten by another organism.
An animal that hunts, and kills other animals for food.
food web
A diagram that shows the feeding relationships between organisms in an ecosystem; it contains multiple overlapping food chains.
food chain
A diagram that represents how energy in food flows from one organism to the next in an ecosystem.
energy pyramid
A diagram that shows the amount of energy that moves from one trophic level to another in an ecosystem.
An interaction in which one organism captures and feeds on another organism to gain energy.
Ecological relationship in which organisms compete for available resources.
An ecological relationship between two species where one benefits and the other is unaffected
A relationship between two species in which both species benefit.
A relationship between two organisms of different species where one benefits and the other is harmed.
carbon cycle
The movement of carbon between inorganic pools and organic pools in the environment
Burning of fossil fuels and wood, releasing energy and carbon dioxide.
Process used by plants to capture and convert the sun's energy, water, and carbon dioxide into glucose (sugar).
The preservation, wise use, and protection of natural resources.
tropical rainforest
Biome characterized by hot temperatures, large amounts of rainfall, and high biodiversity,that grows near the equator; it receives large amounts of rain, and has dense growths of tall, leafy trees; the weather is warm and wet year-round; few plants live on the dark forest floor.
The study of the relationships between organisms and their environment.
Living organisms interacting with each other and their nonliving environment.
An organism that decays dead matter and recycles its' nutrients back into the soil.
Regions of the world with similar biotic and abiotic characteristics including climate, landscape, plants and animals.
Dead plant matter that contributes to the organic soil carbon pool.
trophic level
Each of several hierarchical levels in an ecosystem, comprising organisms that share the same function in the food chain and the same nutritional relationship to the primary sources of energy.
carbon flux
Amount of carbon exchanged between earth's carbon pools per unit time
The place an organism lives.
examples of abiotic factors
water, soil, light , minerals, wind, air, temperature, pollution
examples of biotic factors
Plants, Animals, Fungi
death rate
The number of deaths in a population in a certain amount of time.
birth rate
The number of births in a population in a certain amount of time.
migration rate
The number of organisms that move in and out of a specific area.
limiting factors
The resources that organisms need to survive. When unavailable these factors limit a populations' ability to grow/increase.
Example: resources such as food, water or space become limited
An organism on which a parasite lives.
An organism that feeds on a living host
An organism hides by blending its appearance with its environment
biome consisting of large, rolling terrains of grasses, flowers and herbs where the average annual precipitation is great enough to support grasses, and in some areas a few trees.
Biome made up of any of body of water such as lakes, ponds, streams, and rivers. They cover roughly 20% of the Earth and are in various locations spread out all over the world. Most consist of moving water and contain many types of fish.
Any feature an organism has to help it survive in its' environment.

Flickr Creative Commons Images

Some images used in this set are licensed under the Creative Commons through Flickr.com.
Click to see the original works with their full license.