Ais a simplified representation of a system, process, or relationship.

According to the video, two of the ways government can play a role in the economy is by protecting property rights and to

What was piaget's explanation as to why preschool-age children in the preoperational stage make errors on tasks requiring conservation? a) preschool children's tendency toward centration prevents them from focusing on other relevant features of a situation b) preschool children have not yet developed numerical understanding; therefore, different amounts are meaningless c) preschool children's neural-visual network is not fully matured d) preschool children have not lived long enough and accrued enough experience to know the difference between quantities

Thermal expansion is an example of? a) mechanical weathering b) chemical weathering c) erosion d) molecular weathering