Population distribution is usually greatly affected by what?
Polynesia was greatly affected by European colonization.
Temperate. Summers are mild and so are the winters, but both are greatly affected by coastal-climate humidity. It doesn't rain nearly as much as in the UK or Norway, but we get lots of summer showers.
the adverb is 'greatly' and it modifies 'affected' which is a verb, so no it does not modify an adjective.
Driving while texting greatly reduces the driver's reaction time and will therefore put more lives at risk.
Trade.
African American and Hispanic are greatly affect by sicklecell.
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.
I was affected greatly by the emotional heights of the play. The effect of the movie on me was exhilirating.