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Human impact on the environment

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Question
Answer
What is population explosion?   A dramatic increase in the growth of a population  
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Name 4 factors that have caused the world population explosion?   Better healthcare Not many natural predators Perfect world climate Diet aand nutrition  
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Name 3 problems the world population create?   Less food to go around More carbon dioxide being produced More trees needing to be cut down to make space for humans  
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List 3 techniques used in intensive farming?   Competing plants are removed herbivorous animals are removed Animals are kept inside  
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What are herbicides used for?   They are used to kill any unwanted plants  
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What effect do herbicides have on biodiversity?   They reduce the biodiversity  
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What are the two effects on a plant using pesticides?   The plants are less damaged They photosynthesise more  
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What are the disadvantages of pesticides?   They will kill animals that eat the crops When it rains the pesticide runs into rivers/lakes  
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What does battery farming mean?   This is when animals are kept inside  
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Give an example of an animal that is battery farmed   Chicken  
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Created by: jaashley
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