HLTA02H3 Lecture Notes - Lecture 8: Paul J. Crutzen, Geologic Time Scale, Anthropocene
Document Summary
Ecology is the study of interactions among organisms and their environment. Health=the ability of an organism to maintain balance with environment. There is a complex web of causation. Framework: individual -> family -> society: also cell singling -> cell -> organ system -> individual. Planetary health: heal of human civilisation and the state of the natural systems on which it depends: earth"s (cid:374)atural syste(cid:373)s that defi(cid:374)e the safe environmental limits within which humanity can flourish. Proposed by paul crutzen, human + in geologic time. Earth"s (cid:373)ost re(cid:272)e(cid:374)t geologi(cid:272) ti(cid:373)e period is (cid:272)hara(cid:272)terized (cid:271)y hu(cid:373)a(cid:374)-influence (anthropogenic) Earth system processes (atmospheric, geologi(cid:272), hydrologi(cid:272) ) are altered (cid:271)y hu(cid:373)a(cid:374) Climate change causes: air pollution, water quality impacts, extreme heat, severe weather, water/food supply impacts, environmental degradation. Chemical level elements, atoms and molecules. Cellular level - cells; smallest functioning units of living matter, each type of cell has its own function.
