You didn't give your choices but sin 21 equals 0.358.
Topographical map has markings to show points of elevation like hills and mountains.
Answer:
There is overwhelming evidence that human activities, especially burning fossil fuels, are leading to increased levels of carbon dioxide and other greenhouse gases in the atmosphere, which in turn amplify the natural greenhouse effect, causing the temperature of the Earth's atmosphere, ocean.
D. Exfoliation is the answer
An·glo-A·mer·i·can
adjective
1.
relating to both Britain and the US.
"the older Anglo-American conception of the American as an offshoot of the Anglo-Saxons"
of English descent, but born or living in the US.
noun
noun: Anglo-American; plural noun: Anglo-Americans
1.
an American born in England or of English ancestry.
an American whose native tongue is English.