The correct answer is: "commerce and taxes"
When a country has developed trade, it means that its production system is efficent enough to produce enough goods and services to satisfy the needs of its population, plus a production surplus which is sold through commercial activities. The more intense the trade activities conducted are, the more these would need to rely on more advanced technologies and on greater efficiency in the production process. Such situation brings sustained economic growth.
But many times, free markets do not conduct to a fair distribution of all the income generated by the production and trade activities. This is why advanced countries use taxation, collecting money to offer public services or aiding those in need.
Sun and then it went to earth
Answer: perception checking.
Explanation:Perception checking involves a description of the behavior you noticed, possible interpretations of the behavior and a request for clarification about how to interpret the behavior.
It provides a better way to review your assumptions and to share your interpretations.
You can distinguish between correlation and causation and eliminate confounding variables by using random assignment. Experiments often create contrasts between a control group and one or more treatment groups as a crucial part of the scientific method.
<h3>When is random assignment appropriate in an experiment?</h3>
In general, whenever it is ethically feasible and appropriate for your research topic, random assignment should always be used in trials. Both random sampling and random assignment are crucial ideas in research, but it's critical to recognize their distinctions.
<h3>Is it moral to choose participants for an experiment at random?</h3>
Random assignment cannot be used to evaluate risky or unhealthy behaviour. For instance, it would be unethical to assign volunteers at random to one of the two groups and urge them to consume huge amounts of alcohol as part of an experiment on heavy drinkers versus social drinkers.
Learn more about Completely randomized design:
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Answer: d) Process
Explanation:
Process memory model of Atkinson and Shiffrin describes about the memory getting stored and attained in the storage of long term memory.This process works by passing the information memory to the sensory stage through which it gets transferred to short-term memory for a while.After that it is passed on to long term memory for long time storage in permanent form.
Other options are incorrect because structural model based on structure of the model. Idiographic model is based on scientific facts discovery. Nomothic model describes and identifies the variation in model.Thus, the correct option is option(d).
