Answer: They created Terraces into the mountainside
Explanation:
The Inca dug into the mountain side and created Terraces, which allowed them to filter water down the mountain side, as well as make a steeper ledge, since they did everything by hand, with hand made hoe's made out of branches and stones, they where able to till the ground to plant the seeds. The mountainside dirt was very enriched with minerals, which made it perfect land for farming.
Because it was harder to travel over moountains.
Answer: Sensory reduction
Explanation:
The sensory reduction is the process of analyzing and also the filtering of the various types of incoming sensations and it basically providing the efficient feedback to our brain for recognition of the interaction process in the environment.
According to the given question, the Caleb and the amara wake instantly when their child whimper and not by the other sounds and noise. This given example best illustrating the concept of sensory reduction.
Therefore, Sensory reduction is the correct answer.
