jelohagos

hazards vulnerability exposure disaster plant cell plant tissue prokaryotic cell eukaryotic nucleus plasma membrane organelles schwann virchow leeuwenhoek cell theory cell meiosis mitosis cell cycle lethal effects sex chromosomes net osmotic movement net diffusion concentration gradient isotonic hypertonic hypotonic osmosis facilitated diffusion diffusion active and passive transport transport mechanism lava flow intervention beforeduring and after prevention rock fall lahar tephra ash fall pyroclastic flow volcano being struck by moving object temperature noise hazards chemical hazards workplace hazard common types of hazards effect on health impact on health basic concept of hazard vulnerable sectors include effects elements from natural event to disaster underlying risk factors effects of disasters risk disaster concepts environmental concerns geothermal energy fossil fuels characteristics of life unifying themes in the study of life origin of life concept of life water cycle conservation hydroelectric power water bodies water resources