A cell has many structures inside it. All of these structures are held in the cell by its covering. What is this covering called?

heat or electricity in the atmosphere- c.

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )

the correct answer to this question is 2