Searching for the Summer by Joan Aiken Why do the children giggle when the
older folks talk about "back when the
sky was blue"?

A) There is a running joke they've
heard about a green sky.
B) Their grandparents have
constantly lied to them about
the skies above the clouds.
C) At school, they are taught that blue skies are unhealthy.
D) They think it is ridiculous.
They've never seen a blue sky.

go to this website .

but i think it is 2

actually the answer would be c.) jane addams worked hard to improve the lives of less fortunate people.

  this riddles' answer is library.

  the "leaves" are a reference to the books' pages that the library contains; the branches are a network of libraries that connect multiple libraries' collections, resources, and items in a system of a common database, integrating them; the branches' organization are a useful management tool for coordinating the multiple collections many libraries have.