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Unit 6 Lesson 6
Changes in Ecosystems
| Question | Answer |
|---|---|
| A drought would most likely cause a herd of wildebeests to | migrate further to find food. |
| What natural disaster might cause a species of fish to move from one pond to another? | flood |
| If soil is present, the type of succession is ... | secondary succession |
| What is the first step in the eutrophication of a pond? | excessive nutrients build up in the water |
| What would happen to the biodiversity of an area if it experienced a volcanic eruption? | Biodiversity would decrease |
| How can you distinguish between primary and secondary succession? | Primary succession begins with no soil; Secondary succession has soil present at the beginning. |
| What does biodiversity indicate about an ecosystem? | The ability to survive change. |
| Is it possible for a pond to become a meadow from eutrophication? | Yes |
| What are examples of pioneer species and what do they do? | Lichen and mosses that break down rock into soil. |
| What happens to the number of species in an ecosystem during succession? | The number increases as succession proceeds. |
| Are ecosystems constantly changing over time? | Yes |
| How do ecosystems change over time? | Biological communities are gradually being replaced by other communities. |
| Which ecosystem likely has the greatest biodiversity and highest sustainability? | Rain Forest |
| How does natural eutrophication affect a pond ecosystem? | It causes nutrients to build up. |
Created by:
lmsraiders
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