Karteikarten
Biodiversity and Environment
Karten in diesem Stapel (10)
- 1What is a quadrat? What is it used for?A square frame used to measure the biodiversity in an area
- 2What is a transect? What is it used for?A set of samples taken down a line to measure the change in populations along a gradient
- 3If you are carrying out sampling of an environment, what kind of things must you consider?It must be typical of the whole area
It must not affect the results (some animals may be scared away by humans)
The quadrats must be placed randomly to avoid bias - 4What is capture / recapture?The method used to estimate the population of a species.
- 5What is biodiversity?The variety of different species in a given area
- 6Why is biodiversity important?The more species in an area, the more stable the ecosystem is. It also provides potential foods, industrial materials and new medicines.
- 7Name 4 ways we can protect biodiversity and endangered speciesSites of Specific Interest (SSI's)
CITE's
Seed banks
Captive breeding programmes
National parks
Fishing quotas - 8What is an alien species?A species that is not native to a certain country or region but has been introduced
- 9What is a biological control agent?A living organism used to control the population of a pest species
- 10How has the approach to biological control changed over the years? What is now done before biological controls are releasedLarge scale field trials are now used because scientists are aware that the biological control can turn into a pest itself which is then difficult to control, such as the Japanese knotweed.
Informationen
- Beschreibung
- Questions on biodiversity and the environment (B2 WJEC)
- Erstellt von
- Gelöschter Nutzer
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- 118
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- Erstellt von Seren Jones · 28 Dez 2015
- Kopiert von Ashley Lewis · 26 Feb 2017
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