This jet stream—the one that forms at the polar front—affects weather in the United States. ... This shift occurs because the entire hemisphere is cooler, so the boundary between the cold polar air and the warm southern air shifts south. As a result, the jet stream shifts toward the south in winter.
Answer:
1 e
2 d
3 b
4 a
5 c
Because the DNA is being recombined with other DNA.
A = 70, B = 10, C=20, D=20, E= 30, F=50.
