an electric can opener
Population distribution is usually greatly affected by what?
Tornadoes can destroy swaths of vegetation and man-made structures, but the land itself is not greatly affected. In rare cases soil may be scoured away.
Polynesia was greatly affected by European colonization.
the adverb is 'greatly' and it modifies 'affected' which is a verb, so no it does not modify an adjective.
Trade.
African American and Hispanic are greatly affect by sicklecell.
The Western Han Dynasty was regarded as the first unified and powerful ... During the reign of Emperor Wu, Liu Che who ruled from 141 - 87 BC, the Han Dynasty ... lived in the north part of China) and greatly enlarged the territory of the Western Han. ... Han was one of the most powerful countries in the world and its culture ...
The cold front
Employment opportunities.
Oil
The European contact with Africans affected the Africans mainly by the slave trade. The economy was greatly affected.
If you must know, the mystical "children of the corn" were greatly affected by the loss of their homes.