Purple could mean many things but if it's talking about climate and such then cooler colors like purple are usually meaning colder climate
C passes through (1,6) and has a slope of 4
Northeastern United States is the region next to the Great Lakes (for example: lake Ontario) - and in fact they form the border between the Northeastern United States and Canada. (Perhaps" Great Lake region" fits better the gap - the gap needs a phrase in singular form).
Answer:
Photosphere, Chromosphere, and the Corona
Explanation:
