Human influence Flashcards
It is poruing and things are cracking
What detrimental effect can sulfur dioxide have on the enviroment?
- Can dissolve in water causing acid rain
- Acid rain can erode buildings and pollute water sources
Sulfur dioxide is formed when fossil fuels with impurites are burned
Blood
What detrimental impact can carbon monoxide have on the enviroment?
- Binds to haemoglobin preventing oxygen to be carried through the body
- Too much exposure to carbon monoxide can cause unconsciosness and death
Carbon monoxide is formed from incomplete combustion of fossil fuels
Name five green house gases
- Water vapour
- Nitrous oxide
- Carbon dioxide
- Methane
- CFC
CFC- chlorofluorocarbons
Give three human activites that contrubute to green house gases
- Buring fossil fuels
- Deforstaion
- Large scael livestock farming
How do green house gases contribute to global warming?
- Allow heat from the sun to enete rthe earths atmosphere
- Gases act as a blanket trapping the heat in the atmosphere
State three negative consequeces of global warming
- Sea levels rise (melting ice caps)
- Disrupted farming and agriculture
- Increased spread of disease in warmer countries
Describe how sewage in water ways afect aquatic life
- Microrgansiums will decompose the sewage
- They rapidly increase and use up the oxygen in the water for aerobic respiration
- There is less oxygen in teh dissolved water so aquatic organsiums struggle for survial
What is eutrophication?
- Excess amount of nutrients in a body of water
This is usally because of fertillisers
Why is eutrophication bad for aquatic life?
- Increases nitrates in the water which increase the number of algae
- Cause and algae bloom over the water surface
- The algae cover the usns light from reaching water plants under the water
- The plants die because iwthout light they cannot photosyntheisis
- Microbes (like bacteria) increase decomposing the dead plants
- The microbes use and reduce oxygen for aerobic respiraton
- Causing low oxygen levels which affects the aqutic life which would probably die
If the situation is bad than the water area e.g. lake in the end could be completly empty
State five negative effects of deforestaion
- Leaching
- Less CO2 being taken out of teh atmosphere because there are less plants doing photosyntheiss
- Soil erosion
- Habitat disruption
- Disruption of the carbon cycle
What is leaching?
The loss of water soluble plant nutrients from the soil due to rain and irrigation.
What is evapotranspiration?
- Trees/ plants provinding water to the atmosphere from evaportaion and transpiration
What effect does deforsation have on evaportranspiration?
- Less tress means there is less evaportanspiration
- Less water wil be returned to the atmosphere
- Causing area to dry up
