2. Alex has a type of rock called calcite, which sometimes glows. He puts the
calcite under a desk lamp but the calcite does not glow. Then he puts it under
an ultraviolet lamp and the calcite glows. Why does ultraviolet light make the
calcite glow when light from the desk lamp does not?

do you have more to the question?

the correct answer is:

from context clues heliotrope is probably a flower.

a heliotrope are peruvian plants that have small purplish plants.

the book's theme is the moral ambiguity of the iranian revolution, history of middle eastern relations and the process of growing up during war. it sheds light on the stereotypical views of middle eastern culture and religion.

the author explicitly portrays the issues of class disparities and racism continously throught the whole novel.

the relationship between parents and childrens, the abandonment of faith, modernity vs fundamentalism and class conflict are the 4 main panels that this novel englobes.

hope this , if you would like me to be more specific about a specific excerpt let me know : )