Human Impact: Biodiversity, Pollution & Conservation (Cambridge (CIE) IGCSE Co-ordinated Sciences (Double Award): Biology): Flashcards
Exam code: 0654 & 0973
1/110Still learning
Know0
Ecosystem
Was this flashcard helpful?
Cards in this collection (11)
Ecosystem
A unit containing the community of organisms and their environment, interacting together.
Biodiversity
The number of different species in an area.
Describe human pressures that threaten other species.
Habitat destruction (e.g. for farming or building).
Pollution.
Hunting and overharvesting.
Introduction of new (invasive) species.
Describe the undesirable effects of deforestation (Extended).
Loss of habitat and reduced biodiversity (extinction of species).
Increased carbon dioxide in the atmosphere (less photosynthesis, more burning).
Soil erosion.
Flooding.
is the number of different species in an area.
Biodiversity
Deforestation reduces by destroying the habitats of many species.
biodiversity
Endangered species
A species that is at risk of becoming extinct.
Describe methods used to conserve endangered species.
Protected areas (e.g. national parks and reserves).
Captive breeding programmes in zoos.
Seed banks.
Laws to protect species and their habitats.
Education.
An species is one that is at risk of becoming extinct.
endangered
Why is it important to conserve endangered species?
To maintain biodiversity.
To protect food chains and ecosystems.
For potential future medicines and resources.
breeding programmes in zoos help increase the numbers of endangered species.
Captive
Sign up to unlock flashcards
or