Imagine the president vetoes a bill. Congress tries to override the veto, but only half of Congress supports the bill.

What could be done to help the bill gain approval?

all you have to do is get Congress to vote on it again. when they do, if two-thirds of Congress votes in favor of your bill, it will become a law

Explanation:

the correct answer is b>

the lines on a surface map are called isobars. isobars are lines of constant pressure which are measured in units called millibars. the numbers indicate the amount of air pressure, in millibars, that each line represents.