'Volcanic lava flow cools' presentation slideshows

DEMOGRAPHIC TRANSITION

DEMOGRAPHIC TRANSITION. Way to explain changes in population composition e.g. high to low birth rate. FOUR STAGES: STAGE ONE: Both death and birth rate high ( pre-industrial ). Balance in population. DEMOGRAPHIC TRANSITION STAGE TWO:. DEVELOPING COUNTRIES

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Lecture #2 Ecological Succession

Lecture #2 Ecological Succession. Unit 7: Ecology. Ecological succession - the regular progression of species replacement over time in a new or disturbed community. . Succession shows some general trends that include:. 1) Biomass increases over time.

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Succession in Ecosystems

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