Human Impact On The Environment Flashcards
What is needed for the increase rate of population.
Food increase.
What methods can be used to increase crops.
Fertiliser
Biological control
Pesticides
Genetically modified (GM)
What is the disadvantage of fertilisers being used on crops.
They can leach from fields into rivers/ponds, increasing the amount of algae blooms.
What happens when algae blooms die.
Bacteria multiplies resulting in a decrease in oxygen.
What happens when pesticides are used on crops.
It can accumulate in the bodies of organisms and so build up along food chains.
What does biological control rely on.
Natural solutions to pest problems, such as making use of natural
What is the advantage of using biological control and GM crops.
Less damage is made to the environment.
What is meant by a sample.
Answer here
Give two sources of error that can be found using a quadrats.
Answer here
Give two sources of error that can me found when using a pitfall trap.
Answer here
