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The role of the President pro tempore of the Senate is mostly ceremonial as he is appointed to work in the place of a vice president when he is not available and take everything in control.
Mostly the power is in the hands of the other leaders and the senators but in the absence of the vice president the President pro tempore of the senate takes his place and certain duties are authorised which he can perform during that time.
Answer: Charles Darwin
Explanation:
The theory of natural selection was explored by 19th-century naturalist Charles Darwin. Natural selection explains how genetic traits of a species may change over time. This may lead to speciation, the formation of a distinct new species.
The eruption of the Indonesian super-volcano Toba, had global climatic effects that lasted for few years. Because the volcano was massive, and it released huge amounts of pyroclastic material, ash, and gasses into the atmosphere, the Earth experienced an immediate mini Ice Age. The eruption was devastating for the creatures living in the surrounding regions. The Homo spaiens was not an exception, and the sudden change in climate almost managed to wipe it out from the face of the Earth. Some genetic examinations suggest that only around 120 individuals of the species managed to survive.
