The human activity most widely viewed as changing the planet is the burning of fossil fuels. ... to melt, threatening water supplies for hundreds of millions of people. ... and phosphorus to the biosphere than would occur naturally. ... compounds that can remain active in the environment for thousands of years .
hope this helps u
Answer:Over the centuries, the Great Wall has been built and rebuilt for three main purposes: as kingdom border defenses, to defend China's northern border, and for tourism. Read on to see why China built, or did not build, the Great Wall in different historical periods.
Explanation:hope I helped!
Answer:
The Mau Mau uprising convinced the British of the need for reform in Kenya and the wheels were set in motion for the transition to independence.
Explanation:
The Black Plague didn't help improve the lives of anybody - it was such a horrible disease and spread so quickly throughout Europe that it decreased the population dramatically.
