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Impacts on Biosphere (Lifeforms)

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4.2.3

This section examines examines the series of mass extinctions of life over almost 600 million years. Theories and evidence are documented with time lines.

This section deals with the fossil records and shows the extinctions caused by previous climate changes of Earth’s life forms.

Presently, at least since 1850, the earth is losing millions of species per century due to the present changes in climate caused by the burning of fossil fuels and changes in human behaviour.

Millions: the number is speculation as scientists are still trying to complete an inventory of the present species on Earth, while we continue to lose species due to humans activities, changing landscapes, and changing climate.