Which of the following behaviors allows a bird to maintain a constant body temperature in extremely hot weather?
a. spreading wings
c. flattening feathers
b. panting
d. all of the above
user: bird bones are adapted for flight because they
a. are dense
c. are hollow
b. contain bone marrow
d. are longer than the bones of most animals

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.'

i won't lie i don't know so go online and ask google thats what i do