Paragraph 1- Improving your home's insulation and sealing air leaks are the fastest and most cost-efficient ways to reduce energy waste and make the most of your energy dollars. Be sure to seal air leaks before you insulate, because insulating materials won't block leaks. What is the meaning of the phrase most-effective in the first paragraph of this passage? recommended levels of insulation (exert 1).

A. Working hard for the money you earn
B. Saving your money for a future expense
C. Getting the most for the money you spent
D. Spending your money on something unnecessary

B

Explanation:

Explanation:

a

the answer would be a

21 balloons is the story of professor william sherman's travels.

in 1883, he set off from san francisco for a balloon ride over the pacific and was found a month later floating with 21 balloons in the atlantic ocean. this seemed an astounding feat and everyone wanted to know what had happened.    

professor sherman was loyal, however, and said he would tell his tale first to the western american explorers club in san francisco, of which he was a member. this built up suspense for several chapters before he began to tell of the wonders of his adventures and the amazing island of krakatoa, an island which had just been blown up by a volcano.  

the residents of krakatoa are all millionaires who live under a "gourmet government" of their own devising. we get to see all the incredible adventures that creative people with unlimited resources would create according to the author.