Answer:
Allows to reabsorb water.
Explanation:
The kidney uses energy to generate an osmotic gradient (that is the difference in the concentration of two spaces separated by a membrane). This gradient allows the kidney to reabsorb water, and so create more concentrated urine or less concentrated, depending on how hydrated the body is.
Answer: Option D) 8 segments, with the 2 original strands on different segments
Explanation:
During polymerase chain reaction, a double stranded DNA (dsDNA) is selectively and repeatedly copied in the PCR machine.
In the first round, the single piece of double stranded DNA (dsDNA) unwinds in two seperate strands, before complementary nucleotides are synthesized to establish double helix.
In the second round, the two dsDNA yields 4 segments before complementary nucleotides are synthesized to establish double helix.
In the third round, the four dsDNA yields 8 segments before complementary nucleotides are synthesized to establish double helix.
Thus, after 3 rounds, the two original strands are on the 8 different segments of copied DNA.
Answer: Marine environments provide the perfect habitat for these seagoing birds. They can be found in tropical and subtropical regions of the west coast of Central America, and northern South America.
Explanation: