Answer:
20 hours
Explanation:
Since 4 men as half as many as 8 men, it will take double the amount of time to perform the same amount of work. Therefore, it would take 20 hours to build the wall.
If you understand bisons, you know their motives, how they behave the way they do, therefore, using your knowledge, you can work to protect them.
Answer:
D
Explanation:
A measure is neither reliable nor valid. So this measure don´t exist.
