| A | B |
|---|
| What is biogeography? | It is the study of where organisms live |
| What is dispersal? | When organisms move from one place to another |
| What are 3 things that can cause dispersal? | wind, water, living things (including humans) |
| Give an example of dispersal | Seeds can be blown, insects can float on leaves, dogs can carry sticky seeds |
| What are native species? | species that have naturally grown in an area |
| What are exotic species? | A species that has been carried by humans to a new area, that is not natural for them. |
| What are 3 factors that limit dispersal? | physical barriers, competition and climate |
| What is an example of how physical barriers limit dispersal? | Water, mountains and deserts are hard to cross |
| What is an example of how competition limits dispersal? | other organisms in the new area might compete and win |
| What is an example of how climate can limit dispersal? | a squirrel can live in a cool place, but not higher up on a mountain where it is very cold. |
| What is climate? | the weather pattern in an area over a long time. |
