radioecology class

4. ___________ factor is commonly used to describe the level of radioactive contamination of aquatic biota.
6. _____ effect refers to increase of radiocaesium contamination of fish with increasing of fish size.
9. _________ – fish hatch in freshwater, migrate to the ocean to feed and grow to maturity, and then return to freshwater to spawn.
10. _________ – a chemical element, which acts similar to radiostrontium.
11. _________ accident happened on 26 April 1986.
12. ___________ half-life refers to the time it takes for half of the amount of that radionuclide to be eliminated from the body through natural processes.

1. ___________ fish – can only survive within a narrow range of water salinity.
2. _________ is the unit for radioactivity, which measures the rate of radioactive decay.
3. _________ – a chemical element, which acts similar to radiocaesium.
5. ________________ is a process which refers to increase of radiocaesium accumulation in fish from higher trophic level.
7. Radioactive half-life defined as time taken for one-half (1/2) of a given amount of a radioactive element to _____.
8. ___________ fish – capable of adapting to a wide range of water salinities.