Use your understanding of the terms ""soluble"" and ""insoluble"" to explain why you must shake a bottle of salad dressing made with oil and vinegar before you use it.

Vinegar and oil don't mix or dissolve in same solution, and this makes them insoluble

Explanation:

Vinegar and oil don't mix or dissolve in same solution, and this makes them insoluble, that's why they must be shared so the layer of oil or vinegar doesn't remain.

An insoluble solution is a solution which the two element which makes up the compound don't dissolve themselves

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.

i truly dont know the answer wait i do its 1,3,4