Questions

The tropical grasslands of Africa are known as Savanna.

Plagues and Peoples is a book on epidemiological history by William Hardy McNeill published in New York City in 1976. It was a critical and popular success, offering a radically new interpretation of the extraordinary impact of infectious disease on cultures as a means of enemy attack. The book ranges from examining the effects of smallpox in Mexico, the bubonic plague in China, to the typhoid epidemic in Europe.

Carbon monoxide (CO) is very dangerous because it binds with the haemoglobin more efficiently than oxygen does. It "hogs the seats" so that oxygen can't get a ride. And those CO molecules keep riding around, never giving their seats up to the oxygen. This means there is no way to get oxygen to the brain, heart, or other cells and those cells start to die. And finally, it leads to suffocation and even death of a person.

The Nobel Prize in Physics 1930 was awarded to Sir Chandrasekhara Venkata Raman "for his work on the scattering of light and for the discovery of the effect named after him".