True. Many of these
stones have been exposed to the elements.
Eventually such an exposure would wear out these stones as some of its
parts will start to chip away. More it
is exposed to the elements, the more it gets affected. The result is a strange shape due to the
exposure.
The correct answer is 9πr^2
I know because I just took the quiz.
An archaeologist studies the lives of early humans by examining artifacts. Archaeology is essentially the study of human life, as well as material culture and environmental data which can explain how people in history lived. This includes prehistory and history. Archaeologists use different ways to identify this through surveying, excavation and analysis of data collection.
The "Voyager 2" is the unmanned spacecraft that flew 3,100 miles close to Neptune in 1989.
