Biodiveristy and the effect of human interaction on ecosystems Flashcards
What is biodiveristy
the variety of the different species on earth or within an ecosystem
What is the importance of biodiveristy
to maintain the stability of an ecosystem
how does biodiveristy ensure the stability of an ecosystem
it reduces the dependance on particular species for resources
Why has humans consumptions of resources and waste production increased
.increase in standard of living
.rapid rise in human population
where does pollution occur
.air
.land
.water
state an example of water polutants
.sewage
.fertiliser
.chemicals
how does etrophucation occur
Dead plants are decomposed by bacteria and the oxygen level decreases further
state an example of air pollutants
.smoke
.acidic acids
state an example of land pollutants
.landfill wastes
.Chemicals
What human activites reduce the land available for plants and animals
.Building
.Farming
.quarrying
.disposing of waste
Why have peat dogs been destroyed
to produce compost to increase food production
why does the destruction of peat dogs greatly contribute to greenhouse affect
peatdogs are stores of carbon, and burning them releases a large volume of carbon dioxide into the atmoshphere
Why have large scale deforistation activites occured
. to provide land for cattle and rice fields
.to grow crops to produce biofuels
what is the greenhouse affect
greenhouses gases trap energy from the sun as heat in the atmosphere, keeping the temperatur eon earth suitable for life
What is causing global warming
the increase in levels of greenhouse gases eg carbon dioxide and methane , causing the temperatures on earth to increase
what are the harmful affects of deforistation
.destruction of many animals habitats
.releases large amount of greenhouse gases n
state the consequences of global warming
.rising sea levels
.melting polar ice caps
.changing weather patterns
.extinction of species
desribe the steps taken to maintain biodiveristy
.breeding programmes
.protection and building habitats
.reduce deforistation
.recycling rather than disposing in landfills
what is the purpouse of replanting hedgerows and field margins
there is higher biodiveristy in the margins than the fields that they surround
