ISSN:
1476-4687
Quelle:
Nature Archives 1869 - 2009
Thema:
Biologie
,
Chemie und Pharmazie
,
Medizin
,
Allgemeine Naturwissenschaft
,
Physik
Notizen:
[Auszug] A variety of clever approaches has been developed to obtain proxy records of what the Earth was like in previous eras. Ocean cores, lake sediments, pollen, corals, palaeosoils and the annual rings of trees have all been used to infer changes in climate and productivity. But these records are ...
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1038/22886
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