Slide Preview for B2 Understanding our Environment

Powerpoint Description:

This slideshow covers the 2011 Understanding the Environment (B2) unit and includes: classification, the Binomial System, species, problems with classifying species, common ancestors, the evolution tree, food chains, food webs, breaking food web links, pyramids of number, pyramids of biomass, energy flow in a food chain, efficiency of food chains, decomposing, the Carbon Cycle, carbon dioxide in the atmosphere, the Nitrogen Cycle, competition between species, interspecific and intraspecific competition, ecological niches, predator/prey cycles, interdependence, adaptation, adaptations for hunting and avoiding being hunted, behavioural adaptations, extreme environments, evolution, natural selection, geographic isolation, the views of Darwin and Lamarck, global population changes, pollution, the greenhouse effect, ozone, pollution indicator species in air and water, sustainability, extinct and endangered species, protecting endangered species, sustainable development.