Answer:
The correct answer is:
Includes at least two groups, one of which does not receive the experimental treatment. (B)
Explanation:
A controlled experiment is made up of at least two groups of participants (subjects). One group (the test group) receives the experimental treatment, which can be an intervention or a new drug to be tested etc, and the effect of the treatment on the subjects is measured, while the second group of similar subjects also known as the control group acts as a baseline and do not receive the treatment or intervention. They act as a baseline to ensure that the change observed in the treatment group was brought about as a result of the treatment.
<em>Note that repeating the experiment several times does not ensure accuracy of the result, rather it ensures reliability of the results hence option D is not correct</em>
Answer: heavy eroded particles settle out of moving water
Placer deposits forms when rocks weathered due to the effect of water. The heavy minerals from the rocks get settled down in water. Minerals that form placer deposits have high specific gravity, they are resistant to chemical weathering process and are durable.
The big ban occurred at the beginning of the year the first second[437 . 5 years per second] of January , the solar system and life at September.
The right option is; b. anticipatory socialization.
Playing house as a child is a form of anticipatory socialization.
Anticipatory socialization is the process in which an individual changes his behaviors or learn new norms and values in preparation for a change in his role in the future. Playing house which is children’s game is a form of anticipatory socialization because when children play the game, they take the roles of a nuclear family such as children, parents, and newborns. Due to children’s experience with the game, they are prepared for adulthood.
