Select all the true statements about density: (hint - there are 4 correct statements) d=m/v (denisty equals mass divided by volume)

density is measured in meters

density is the ratio of an objects mass to its volume

objects that are heavy for their size are very dense

objects that are heavy for their size are not dense

density is how much matter is in a given amount of space

all dense objects will float

(there is more then 1 answer by the way)

answer

2nd is wrong

5th is wrong

last is wrong

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

i hope this you

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'