.............................
<span>At Cornell university, Gibson and walk placed infants on the edge of a safe canyon to determine whether crawling infants and newborn animals can perceive depth. this famous experiment is known as the visual cliff. The </span>psychologists Eleanor J. Gibson and Richard D created apparatus <span>to investigate depth perception.</span>
Answer:
D
Explanation:
because people have to help build the city by paving streets, dig sewers, constructing houses.
Answer:
b
Explanation:
because i did take the same question from my class as well
