Rivers are lifelines in many dry regions of Africa. They provide the necessary water for agriculture, household uses, transport, and biodiversity. They fill the wetlands of inland and coastal deltas with fresh water, thereby maintaining the inhabitant’s livelihoods and biodiversity of these dynamic areas
Answer: If water is the transport medium of sediment, the grain size sedimentary deposits most closely indicates:
(B) average velocity of the water from the time of erosion until deposition.
Explanation: Here, the average velocity of the water determines the sorting of the grain size.
If the average velocity is high like that of the beach, the grain size will be well sorted.
But if the average velocity is low like that of a stream, it would be poorly sorted.
The earths most important energy sources the sun
Answer:
The important consequence of upwelling are abundance of fish resources in the upwelling region, influence of coastal climate,development of sea fogs and intensification of existing coastal currents
Answer:
(b) the night would be half as long
Explanation:
- As the earth, if rotated twice as fast than it does now and the sun stayed the same then the night would be as half as long as the rotation of the planet on its axis would be double to that of its and 12 hours of night would be as long as the speed of the axial rotation.
