Students used a sound meter to gather data in three similarly-sized rooms of their school. They played a guitar note amplified to the same volume at one end of each room. The sound meter was placed in the center of the room. The students repeated each
test three times.
Trial
Sound (dB
Classroom Library Lobby
55 50 63
1
2
56
49
64
3
55
49
65
Which room had the greatest reflection of sound off the walls?
O A. the lobby, because the smooth walls reflected more sound
B. the library, because the bookshelves reflected the most sound
O c. the classroom, because more sound was reflected by the furniture
O D. the library, because it was designed to carry sound waves away from the walls

Twenty one miles per hour

The answer would be c, white eyes are homozygous recessive. in the early 1900s, morgan conducted several experiments with vinegar  flies (drosophila). one  sample revealed an anomaly: a  white-eyed, single male fly. he attempted to breed this fly with the typical red-eyed females. the offspring were all red-eyed. using flies from this new generation (brother-sister pairs)  produced some red-eyed and a few white-eyed flies. the white-eyed were all male. in later experiments, he was able to produce white-eyed females. this proved that white eyes are not lethal to either sex (ruling out a and b). since the percentage of white eyes to red eyes is so low, white eyes are not a dominant trait. it would be a recessive trait. 

Alright, i'm gonna try to explain this as good as possible. the law of conservation is like a collection overtime. it never changes though. no matter how you change the constituent parts.