processes and functions, biological diversity, and productivity.

4.The natural environment of a plant or an animal; the locality where an organism may generally be found and where the essentials of its survival and reproduction are present.

5.A complex of interacting plants and animals with their physical surrounding.

6.The processes through which the constituent living and nonliving elements of ecosystems change and interact.

2.Match the following English words with their Ukrainian equivalents:

3. Translate the following word combinations in written form.

ecosystem management, importance of hierarchy, disturbance patterns, unfavorable climatic conditions, infestations by insects and diseases, major river basin, ecosystem restoration, sources of disturbance and stress, climate change, species population, further impact

4. Decide whether the following statements are true or false:

1.An ecosystem consists of plants, animals and microorganisms interacting with their physicaland climatic environment in a given area.

2.Ecosystems are defined by their structures.

3.Ecosystems never change.

4.Each ecosystem has its own set of species not adapted to the regional climate, habitat type and disturbance patterns.

5.Actions taken to modify an ecosystem for the purpose of re-establishing and maintaining desired ecological structures and processes are ecosystem management.

6.Sources of disturbance and stress include insects, diseases, fires, pollutants, ozone and exotic pests.

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