The answer is "Scientific journal".
Answer:
b is the answer .
Explanation:
you just have to find the mean .. (average) so add all the numbers including one of the answer choices then divide by 4. and continue doing that with every answer choice till you get the answer.
Answer:
The terraces were built to make the most efficient use of shallow soil and to enable irrigation of crops by allowing runoff to occur through the outlet.
Explanation: The Inca built on these, developing a system of canals, aqueducts, and puquios to direct water through dry land and increase fertility levels and growth.