Asilver necklace is melted down and poured into a square shaped mold. this produces a square shaped piece of silver with which property?
a. greater conductivity than the necklace
b. the same shape as the necklace
c. the same mass as the necklace.
d. less ductility than the necklace.

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).