Proposed killing mechanisms include: changes in salinity; poisoning by chemicals such as hydrogen sulfide or methane; changes in the availability of oxygen; and changing consistency of the sea floor.
C. reinhardtii cells respond to changes in the availability of ammonia by drastically changing their metabolism and normal development.
We conclude that the current major obstacle in the field is presented by the inherent limitations of the currently available tracers in reporting dynamic changes in the availability of a single OR subclass in the CNS.
"Changes in the availability of food, fuel, medicine, construction materials and income are possible as these ecosystems are changed," says the report.
Changes in the availability of water resources are driven by multiple mechanisms, of which its dominance varies across basins and seasons.
We may see modifications in people's spending and debt habits over the next few years, she said, but it is more likely to be a result of changes in the availability of credit, not a sudden national conversion to thrift.
"Food security in this region is also hampered by natural and human-caused disasters, which often result in volatile prices and sudden and unpredictable changes in the availability of important staple foods," the report found.
"Owing to changes in the availability of materials, and improvement of manufacturing methods," Skelton informs me, "we have been forced to adapt these, but their character has been rigorously retained". It's not a confession but it's a start.
The model is able to synthesize flexible systems that can cope with changes in the availability of raw material supply and variations in product demand.
Thus, while relative changes in the availability of high, medium and low quality habitat are identifiable, expected changes in minimum population size cannot be inferred.
Consequently, organisms evolved mechanisms that give them an ability to measure time over 24 hours and allow them to anticipate and prepare for periodic changes in the availability of light.
