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Biology Revision Notes:
Human Impact on the Environment

This graph shows the
population increasing gradually from
1000 to 1800
After 1800, it begins
increasing rapidly and continues to
do so until 2000 (and afterwards)

Human Effects on the Environment-

Pollution of waterways and air chemical, heat,…

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Pesticides, also used in agriculture, can have different
negative effects on the environment:
If microscopic organisms, usually in water, consume a
small amount of these chemicals, it won't be harmful,
however, they cannot digest them as they can normal
An animal- such as a…

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Biological Control and Alien Species:

Instead of using pesticides, organic farmers use biological control to protect crop against pests. This
method does not use chemicals and therefore has fewer environmental disadvantages. This is often
used when an alien species is introduced and becomes an invasive species:…

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Sustainability is important to prevent animals from extinction and maintain biodiversity; this includes
less deforestation, stricter building regulations etc.

There are millions of species that have not been discovered, it is important to protect
habitats as any of these species could have medicinal qualities, such as…




A beautifully presented set of notes with lots of key detail covering human impact on the environment. These would be useful to any student needing to know about sustainability, pollution and eutrophication. Try teaming these up with a set of flashcards and a quiz for a complete set of useful resources.

Travis lord


I'm am intelligent

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