Answer:
caffeine — independent variable
Explanation:
Independent variable: In psychological research, the term independent variable is defined as the variable that is changing, altered, and manipulated by the experimenter or the researcher. The independent variable is responsible for affecting the dependent variable in an experiment i.e, any changes in the independent variable will cause a direct effect on the dependent variable.
In the question above, the pair that correctly identify a variable in this experiment is the caffeine — independent variable.
If you are talking about plate tectonics, then it's 2-5 cm per year.
2. It discourages political participation
Answer: social exchange theory
Explanation:
Social exchange theory state that in the relationships we form with others we will always try to weigh the benefits versus the cost of that particular relationship.
Every relationship is a two way which means it is not about one person constantly giving whilst the other one is constantly receiving.
The give and take though is not always equal in all relationships that we have which is what this theory states that we may look at whether we are benefiting from that relationship more than it cost us then we can choose to stay and continue with that association.
If the cost is higher than the benefits it may not worth it to keep associating with that relationship.
Relationships that are worth holding unto are those which have benefits that are higher than the cost those are positive relationships but negative ones cost us more than they benefit us.
The answer is “ she has never known his love because she did not choose him”
