Answer:
B. Panama and Costa Rica
Explanation:
if you look at a map of central america you will see. :)
Mountains made farming difficult in both ancient and medieval Japan because it is easier to farm on flat land than on mountain land.
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Answer:
reliable, valid
Explanation:
Reliability and validity are concepts in measurement. Reliability has to do with the degree to which an instrument can produce consistent results when it is used repeatedly over time. Validity, on the other hand, indicates the extent to which the instrument measures its intended measurement. The scale can be reliable but not value as it still produces results, though inaccurate.
