Use the following words and phrases to answer the questions below with the best possible answer. Some phrases will be used MORE than once.

Succession Primary Succession Secondary Succession
Soil Climax Community Pioneer Species

1. A forest of pine trees is burned over a 10 mile area when lightning strikes a tree. In the spring, a few seedlings begin to sprout. This is an example of:

2. A glacier has scraped all soil from a rocky area. As it slowly retreats, some of the rock is broken down by weathering. Some moss begins to grow. This is an example of:

3. An old-growth forest has remained the same combination of hickories and oaks for 100 years. This is an example of a:

4. Small organisms, such as lichens, help break up bare rock into soil. A lichen is an example of a:

5. A pond slowly fills in as algae and other plants die and fall to the bottom. This is an example of:

6. A volcano erupts creating a new island. This is an example of:

7. The process of primary succession begins with the formation of _. Over time the once empty rock surfaces will become populated with organic material.

8.______ occurs when ecosystems change over time through the progressive replacement of species.

1. A forest of pine trees is burned over a 10 mile area when lightning strikes a tree. In the spring, a few seedlings begin to sprout is example secondary succession.

What is secondary succession?

Secondary succession is defined as the which occurs when the severity of disturbance is deficient to remove all the existing vegetation and soil from a site.

2. Primary succession example a glacier has scraped all soil from a rocky area. As it slowly retreats, some of the rock is broken down by weathering. Some moss begins to grow.

Primary productivity is defined as the process through which organisms form their own food from inorganic sources. The majority of primary producers are microbial life and terrestrial plants, such as algae.

3. An old-growth forest has remained the same combination of hickories and oaks for 100 years. This is an example of a climax community. A climax community is defined as the final stage of succession, remaining relatively unaltered until destroyed by an event such as human or fire interference.

4.Small organisms, such as lichens, help break up bare rock into soil. A lichen is an example of a pioneer species. Pioneer species is the first biotic community that develops in bare/scanty area.

5. A pond slowly fills in as algae and other plants die and fall to the bottom. This is an example of secondary succession.

6. A volcano erupts creating a new island. This is an example of succession.

7. Primary succession begins with no soil. Lichens and mosses eventually develop and die, leaving behind some soil. This soil is used by small plants like grasses and some ferns to flourish.

8. Primary succession occurs when ecosystems change over time through the progressive replacement of species.

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