Term
| What positives can biodiversity give us? |
|
Definition
Oxygen, water, food, clothing, health and relaxation; economic benefits
(sustaining resources for industries such as agriculture, fishing, forestry and tourism)
cultural positives - a sense of place. |
|
|
Term
| What are the main threats to biodiversity? |
|
Definition
Exploiting natural resources faster than they can be renewed.
Agriculture
Building development.
Foreign species.
Climate change.
Toxic pollutants. |
|
|
Term
| What does in-situ and ex-situ conservation mean? |
|
Definition
in-situ - keep enviroment where it is and try to sustain/improve conditions
ex-situ - remove plants/animals and try to increase their number, eg. breeding programs. |
|
|
Term
| True or false: Biodiversity is the amount of different species of plants and animals. |
|
Definition
| Half true. It is, but it also includes genetic diversity in single species. |
|
|
Term
| What can affect natural levels of diversity in a particular kind of enviroment? |
|
Definition
| Altitude, level of rainfall, how close to equator. |
|
|
Term
| What enviroment has the greatest variety on Earth? |
|
Definition
|
|
Term
| If one species is changed or affected, why does this have an impact on other species? |
|
Definition
| They are in competition, interdependant or part of a food web. |
|
|
Term
| Enviromentally stable areas have more complex ecosystems. True or false? |
|
Definition
|
|
Term
| What is the natural, background rate of extinction in the history of the Earth? |
|
Definition
| Roughtly 5 species per year. |
|
|
Term
| How many mass extinctions have there been in the history of the Earth? |
|
Definition
|
|
Term
| What single species is responsible for the current increase in extinction rates? |
|
Definition
Gerbils.
No, serously... humans. |
|
|
