Answer:
d. cross-sectional study
Explanation:
In research, a cross-sectional study consists of a gathering of data from a population or a subset of the population we want to investigate at an specific point of time. In other words, the data will give us an idea of what's happening within a group in a particular moment in time.
In this example, the researcher gives 20-year-olds, 40-year-olds, and 60-year-olds a questionnaire. He wants to know if older people are calmer than younger ones. We can see that <u>he wants to know what's happening within this groups (the 20 year-olds, the 40's and the 60's) during this particular time of their life </u>and therefore determine if the 60 year-olds are calmer. Therefore this is an example of cross-sectional study.
Answer:
you gotta sho me the options
Explanation:
Answer:
Requires a difficult set of negotiations: different income levels and set of priorities.
Explanation:
To bring nations of the world to act together in addressing environmental issues that spill over national borders requires difficult set of negotiations between the countries: different income levels and set of priorities.
For example high income countries are the primary producers of greenhouse gases, they might sign agreement with low income countries to reduce their greenhouse effect because most low income countries are still battling of improving food production, healthcare system, and many more so they are not particular about technologies to cause pollution and greenhouse effects. The high income countries can pay low income countries not to produce greenhouse gases which is not their priorities at the moments. Their major priories is the provision of basic necessities of life
Explanation:
The typical folk song is strophic. The tune repeated several time with successive stanzas
Of a poem. Tunes may have from two to eight lines, but most often there are four. The music iterrrelationship among lines I'd described as folk.
Answer:d.Quantity demanded goes up when price falls because lower prices increase consumer purchasing power, and because some consumers of substitute goods switch.
Explanation:
Causality refers to the cause and the effect which means when a particular situation occurs it results to the effect that is observed, there exist a relationship between variables such that when one variable changes it causes the change on the other variable.
For example in this case when price falls it results to an increase in consumer purchasing power and that increases the demand.
So the cause of price falling increases the effect on purchasing product by the consumers.
