Answer:
B. Facts from a documentary about mechanical and artificial hearts
Out of the choices given, the most wasteful use of water is someone running their dishwasher before they are completely full. The rest of the choices conserve water, unless a person takes a very long shower. The correct answer is C.
Answer: Construct validity
Explanation:
Construct validity is the degree to which a test is done to measure what it claims. Construct validity defines how well the test or experiment actually measures its claims and whether the operational definition of the variable reflect the true theoretical meaning of the concept being illustrated.
The psychologist develops a questionnaire that is designed to study the variable of self-esteem and then conducts different studies to investigate the differences between people who had low scores on sled esteem and the people who had high score on self esteem. The reason for this was to get an accurate method of measuring self esteem. This means the psychologist wants to establish construct validity.
The type of economy exist in: Mixed type of economy
In mixed type of economy, both government and private enterprises work together to maintain the economic activities. The government usually control the one that involved in people's daily important necessities, such as :transportation, water, utilities, Gases, etc while the private enterprises control the secondary and tertiary goods
