Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/25

Click to flip

25 Cards in this Set

  • Front
  • Back

Community

A group of various species that live in the same habitat and interact with each other.

Ecosystem

A community of organisms and their abiotic environment.

Habitat

A place where an organism usually lives

Biodiversity

The variety of organisms in a given area,the genetic variation within a population,the variety of species in a community or the variety of communities in a ecosystem.

Succession

The replacement of one type of community by another at a single location over a period of time.

Climate

The average weather conditions in a area over a long period of time.

Biome

A large region characterized by a specific type of climate and certain types of plant and animal communities.

Producer

A photosynthetic or chemosynthetic autotroph that serves as the basic food source in an ecosystem.

Consumer

An organism that eats other organisms organic matter instead of producing its own nutrients or obtaining nutrients from inorganic sources.

Decomposer

An organism that feeds by breaking down organic matter from dead organisms.

Trophic level

One of the steps in a food chain or food pyramid.

Energy Pyramid

A triangular diagram that shows an ecosystem's loss of energy,which results as energy passes through the ecosystem's food chain.

Population

A group of organisms of the same species that live in a specific geographical area and interbreed.

Carrying Capacity

The largest population that an environment can support at any given time.

Predation

An interaction between two organisms in which one organism,the predator,kills and feeds on the other organism,the prey.

Coevolution

The evolution of two or more species that is due to mutual influence.

Parasitism

A relationship between two species,in which one species,the parasite,benefits from the other species,the host,which is harmed.

Symbiosis

A relationship in which two different organisms live in close association with each other.

mutualism

A relationship in which both of the species benefit from each other.

Commensalism

A relationship between two organisms in which one organism benefits and the other is unaffected.

Niche

The unique position occupied by a species,both in terms of its physical use of its habitat and its function within an ecological community.

Fundamental Niche

The largest ecological niche where an organism or species can live without competition.

Realized Niche

The range of resources that a species uses,the conditions that the species can tolerate,and the functional roles that the species plays as a result of competition in the species' fundamental niche.

Competitive Exclusion

The exclusion of one species by another due to competition.

Keystone Species

A species that is critical to the functioning of the ecosystem in which it live because it affects the survival and abundance of many species in it's community.