Question

method of conducting a survey of consumer's expenditure​

Answer 1

Answer:

Participation in the Consumer Expenditure Survey is voluntary. However, when you participate, you are representing thousands of other households like yours. In order to be able to create quality statistics, we rely on the participation of those who are randomly selected.

Explanation:

Answer 2

Answer:

Natural resources are materials from the Earth that are used to support life and meet people's needs. Any natural substance that humans use can be considered a natural resource. Oil, coal, natural gas, metals, stone and sand are natural resources. Other natural resources are air, sunlight, soil and water.