How do the condition in the united states change when the jet streams moves to the south

More cold winters in the south

Explanation:

The fast moving air currents that circulate above the surface of earth is called as jet streams. These winds travel between the troposphere and stratosphere and hence are much stronger during the winters in northern & southern hemisphere due to higher temperature differences. However, the winters in United States are more extreme which causes unstable polar vortex which send cold arctic air into the jet stream and make winter colder in southern pole.  

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.

1. is geographic distribution

2 is increasing complexity

3 is transitional forms