Answer: Because the nile river brought flood washed soil which was very fertile and helped to grow.
Show them examples of what the outcomes may be and show them videos and pictures of what could happen to them.
The answer is <u>"Analogue study".</u>
Analogue Studies refers to studies in which a scientist attempts to copy the conditions theorized as prompting variation from the norm.
Analogue studies are experimental studies in which members intently take after the objective populace. For instance, assume the objective populace would be discouraged individuals; in a simple examination, the specialists will lead try different things with discouraged creatures or ordinary individuals who were quickly made pitiful.
b. barter economy
Simple trading, no money involved. (Also the definition of barter)
