REVISION. The Living Environment. Conditions for Life on Earth. Availability of water Appropriate temperature range Suitable ambient gases Light Atmospheric oxygen Atmospheric carbon dioxide. Physiological solvent, transport, coolant.
The Living Environment
Availability of water
Appropriate temperature range
Suitable ambient gases
Atmospheric carbon dioxide
Physiological solvent, transport, coolant.
The anomalous expansion on freezing (ice floats) prevents many water bodies from freezing solid.
The high specific heat capacity of water moderates temperature change.
Water provides aquatic habitats.
For liquid water, enzyme function.
Carbon dioxide, nitrogen in the pre-life atmosphere
photosynthesis, source of energy for the water cycle.
The production of oxygen and its interaction with UV to form the ozone layer.
Reduction of CO2 levels and the importance of this in maintaining global temperatures as the sun has become brighter.
How many can you name?
Hint: there are 8
Pets and entertainment
Furniture and ornaments
Accidental harm from other activities
Unintentional deaths caused by human activities
Habitat change / destruction
Give an example of each
How do each of these help in conservation?
National Nature Reserves
Local Nature Reserves
Marine Nature Reserve
Special Protection Areas (SPAs)
Special Areas of Conservation (SACs)
Plants, animals, geographical or geological features.
Rare or migratory birds
Usually SSSIs which are good examples of important habitats.
Very strict legal controls
benefit of wildlife and the public
Wetlands of international importance.
E.G. Lundy Island, Skomer
Conservation in the UK
How many threatened habitats do you know? Hint: 7!
For each you must be able to give ecological features, importance to humans and threats.
Which are biotic and which are abiotic?
Can you define each one?
What is the difference between primary and secondary succession?
What is a plagioclimax?
What is the climax community in Britain?
What are pioneer species?
What is carrying capacity?
Give 2 density dependent factors
Give 2 density independent factors
The maximum population size that can be supported indefinitely without damaging or over-exploiting
food supply, disease
drought, flood, volcanic eruption
There are 9 major causes of land use conflicts, can you name them?