Answer:
the first choice
Explanation:
The reason why it is the first choice is because you would need to experiment twice before concluding your experiment one has to be normal height and the second test has to be higher also the mass on the car also is a factor to the experiment.
Answer:
im here to answer my module..can you help me please?
Answer:
A struggle between the Eastern Bloc and the West that lasted 40 years.
The answer is W.E.B. Du Bois