Extinction

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
   competitor      disease      environment      extinct      food      habitat      species      survival      web   
Living organisms are dependent on the and other species for their . There is competition for resources between different of animals or plants in the same . Changes affecting one species in a food web affect other species that are part of the same food .A rapid change in the environment may cause a species to become , for example, if the environmental conditions change; a new species that is a , predator or organism of that species is introduced; another organism in its web becomes extinct.