The environment is made up of the:
Landscape.
Atmosphere of an area.
Plants and animals that make that area their home (habitat).
Agriculture
Use of pesticides can kill certain insects and fertiliser can enter rivers and cause eutrophication (excessive growth of plant life).
Habitats may be destroyed when land is cleared for cultivation.
Some agricultural buildings cause visual pollution.
Intensive animal rearing can cause bad smells in the area and noise pollution, and can be seen as cruel to the animal themselves.
Tourism
Tourists can drop litter and cause footpath erosion.
Tourist traffic releases carbon dioxide and some hotels cause visual pollution.
Livestock can be scared by tourists' dogs.
Mining
Visual pollution can be caused be mines and/or the waste material that is piled up near them.
Quarries can cause dust and noise pollution.
Habitats are destroyed to create quarries.
Manufacturing
Noise pollution can occur and factories can cause visual pollution.
Carbon dioxide is released by most manufacturing industry.
Forestry
The natural environment is altered by the removal of natural vegetation and non-native trees being planted.
Noise pollution can occur when trees are felled.