Why is africa call the cradle of humankind?
name the three african stone age division
from which continent species originated?
during the later stone age, what are the tools used for hunting large and small animals?
during the later stone age, which status was granted to the successful hunter?

Agricultural practices in the united states nearly led to the extinction of the peregrine falcon during the 1950s and 60s.

1. crust 1 the metallic layer at the earth's center 2. inner core 3 the firm layer between the crust and the asthenosphere 3. lower mantle 2 the layer surrounding the inner core 4. asthenosphere 4 the semi-solid layer between the top layer and the upper mantle 5. upper mantle 5 the layer between the asthenosphere and lower mantle 6. top layer 6 the earth's outermost layer 7. outer core 7 the hottest part of the mantle

How many time zone are there on earth