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Competition & Growth


What do plants need to survive in an environment?(4) • Light • Space • Water • Minerals
What do animals need to survive in an environment?(4) • Space • Food • Water • Mates
What are different types of living factors?(4) • Change in the number of infectious diseases • Change in the number of predators • Change in the number of prey • Change in the number of types of competitors
What are different types of non-living factors?(3) • Change in rainfall • Change in temperature • Change in air and water pollution
What are the three main ways populations can change? • Population increases • Population decreases • Population distribution changes
Give an example of how population size could increase. Number of prey increases-more food for predators-higher survival so more predator numbers increase too
Give an example of how Population can decrease. Number of prey decreases-less food for predators-lower survival because no food-predator numbers decrease
Give an example of how population distribution can change. A rise in temperature causes species from different environments to inhabit the area
Why do experts think the bee population in the US is falling? • Pesticides • Fewer nectar rich plants so less food • More diseases
Created by: GuyBrazier



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