Answer:
wings flap up and down
Explanation:
when they fly their wings need air so they can fly
Answer:
<u>Cluster sampling</u>
Explanation:
cluster sampling is also called a simple random sampling.
In this sampling, the researchers, select the variable either by simple random sampling or systematic random sampling. the researcher just not to includes the sub-part of sampling but even can include the main sampling in it. in this sampling, the researcher used a geographical cluster to do the sampling in a population.
For example, if a researcher wants to sample n an academic population:
- firstly the researcher divides the population in sub-part
- then researcher select several clusters depends on his research through a systematic random sampling
- from this sampling, the researcher chooses the population with selected subjects through random sampling.
The traditional exchange is what happens in marriage where the women may trade child raising for enhanced economic security.
<h3>What is remarriage?</h3>
This is the term that is used to refer to a subsequent marriage. What this basically means is that the woman is not getting married to her first husband. Instead she has married before and due to one issue or the other she is getting married for the second time.
In this type of marriage the person would have to raise the children of the person that she is getting married to again for the security that she would enjoy.
Read more on marriage here:brainly.com/question/1265280
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Answer: John Steinbeck born 1902 was an American author that also won the Nobel prize for his realistic and imaginative writings.
He wrote lots of books and in one of his books, he described Migrants as dangerous new barbarians. This was during the great depression. What he meant by this text is that, a hungry migrant is hungry. But a migrant whose kids are hungry can be dangerous because this individual can go to any length to feed their kids. This indicates an action or behaviour that benefits another or others at some cost to the performer.
Salinization is the increase of salt content in soil which will often hinder farmers crops.
