Why are gender roles considered socially constructed, according to the textbook?

Water and soil are brought into the indus river valley as a result of a. high winds b. annual floods c. long droughts d. seasonal tornadoes

Based on what you read in the fact sheet, identify the type of customer the company is hoping to reach. super-phonic systems wants to sell phones to customers who: expect the latest smartphone technology. need affordable phone service in remote areas. care more about attractive designs than reliability. will pay top prices for features such as web-surfing.

Refers to the biological heritage people use to identify themselves.