Topic 7(Ecology) Flashcards
Ecology
Habitat-where an organism lives
population- all the organisms of one species living in a habitat
community-the populations of different species living in a habitat
Abiotic factors- non-living factors of the environment
Biotic factors- living factors in the environment
Ecosystem- the interaction of a community of living organisms with the non-living parts of their environment
Interdependence
Where species depend on other species for survival.
TRANSET
Used to compare the distribution of organisms of a certain area.
zone of inibition
Why is classification a thing?
Makes them easier to study
allows us to make sense of the living world
help understand how living things are created.
Helps us recognise biodiversity.
Effects of deforestation
Burning trees releases C02 from combustion.
Loss of habitats and reduced biodiversity.
Abiotic factors
Non-living factors, such as moisture levels, light intensity, temperature and carbon dioxide levels.
Biotic factors
Living factors, such as New predators and availability of food.
Adaptations
allow organisms to survive.
For organisms to change their ways of doing this to survive, such as a colour of fur to blend in to the environment.
Food chain
Producer, primary consumers, secondary consumers and lastly, tertiary consumers.
Water cycle
Energy from the sun makes water evaporate from the land and sea, turning it into water vapour.
The warm water vapour is carried towards the sky, and then cools and condenses to form clouds.
Water falls from the clouds as precipitation onto land, where it provides fresh water for plants and animals.
transpiration
Water evaporates from plants.
Carbon cycle
Co2 is removed from the atmosphere by photosynthesis.The carbon is used to make glucose, which can be used to turn into carbohydrates, fats and proteins.
When plants then respire, they return some Co2.
When plants are eaten by animals, the carbon becomes part of the food chain.
When animals respire, some Co2 is released to the atmosphere
Biodiversity
The variety of different species of organisms on earth, or within a ecosystem.
How is human activity bad
Producing lots of sewers and toxic chemical that gets thrown into rivers and lakes, damaging the ecosystem.
toxic chemicals and waste on land, also effecting the ecosystem
Global warming
Carbon dioxide and methane trap energy in the sun. This traps greenhouse gases which slowly increase the Earth’s temperature which can change rainfall patterns and cause the ice to melt increasing sea water levels.
Deforestation
Using land for buildings, farming and dump wastes, destroying habitats for organisms
Peat Bogs
Bogs are areas of land that are acidic and waterlogged. When plants live in bogs don’t fully decay when they die, because there isn’t enough oxygen, meaning that carbon is stored in the peat instead of being released into the atmosphere. However, it is being used as a fuel and being sold as compost.
Deforestation
Cutting down of forrests.
Less trees means that less carbon dioxide is removed.
Also requires energy to cut down the trees, releasing more carbon dioxide.
Also leads to less biodiversity
Maintaining ecosystems and biodiversity
Breeding programs include keeping endangered species from going extinct
Reducing levels of carbon dioxide by walking instead of taking transport such as cars.
Issues of how Biodiversity is maintained
Costs money for food for example.
