Answer:
A cold front is defined as the transition zone where a cold air mass is replacing a warmer air mass. Cold fronts generally move from northwest to southeast. The air behind a cold front is noticeably colder and drier than the air ahead of it.
sings? i really dont know
D or B
Explanation:
He should choose a method to record and organize the information he has found.
hope i helped
Number 4 should be "should"
Number 5 should be "had better"
Other than that your answers are correct.
