They constructed the Aswan Dam to eliminate seasonal flooding.
The Pacific Ocean is. Its area is about 63.8 million square miles.
That's about 46 percent of all the water area on Earth, and about
one third of the total area of the whole Earth ... land OR water.
Plants, algae, and a group of bacteria called cyanobacteria are the only organisms capable of performing photosynthesis
D. Olduvai Gorge
Explanation:
- From 1935 to 1959, Louis and Mary worked hard in several excavations in Kenya and Tanzania, looking for the remains of early humans. Although they encountered many difficulties, both because of the dangerous and inaccessible terrain and the scarce postwar scientific foundations.
- However, the real breakthrough came in 1959, when one morning in the Olduvai Gorge - a region separating the famous National Park from Tanzania's more famous Serengeti National Park - Mary discovered a 1.75 million-year-old hominid skull, later classified as Parantropus boisei.
- This finding was a strong argument that hominids evolved in Africa.
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It is true that the rainfall that happens in savannas especially in summer time reaches to only half of the annual rainfall. Isolated trees and some types of shrubs are found in savanna. The precipitation rate received by savannas per year is about 30 to 50 inches.
