The two properties robustness and adaptability do not exclude each other since both arise from the necessity of an organism to cope with its environment.
Further information on specific effects currently not included in risk assessment (e.g. immunotoxicity, genotoxicity, multi-generation tests, necessity of further test organisms such as sediment organisms living and grazing on the sediment as well as aquatic macrophytes) (see "Alternative test systems").
Metagenomics provides a holistic approach to the analysis of microbial communities that overcomes the necessity of isolating single organisms for cultivation (Beja et al., 2000; Rondon et al., 2000).
Starting from the concept of biomaterials, from the necessity of respecting the human organism and its components, and from the necessity of holding any biomaterials candidate to requirements specific of each application, this analysis underlines the trends in research that are commented with respect to the actual knowledge and expected advances.
The realization that out of necessity an organism needs to change to survive in a particular environment and that this change cannot be achieved intentionally is an important step, we propose, in a learning progression (e.g., Duncan and Hmelo-Silver 2009) from intuitive to evolutionary reasoning (Evans et al. 2012).
This shows the necessity of going beyond phylogeny and integrating its study with other properties of organisms.
Our results illustrate how the net fitness of organisms may be shaped by ecological context and emphasize the necessity of examining the direct/indirect costs and benefits balance to fully understand host-pathogen interactions.
It is, thus, obvious the necessity of studying inter-annual fluctuations of single organisms and predator-prey interactions in different regions, as emphasized by many authors [3], [7], [17], [18], [24], [28].
These observations have underscored the necessity of full-genome systematic approaches in other organisms, including human.
We do realize the complexity of this issue and the necessity of exercising caution when applying models across organisms without knowing the full characterization of the deleterious outcome.
