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Radda [10]
3 years ago
13

In the United States, the parasite that causes malaria is not present, but African-Americans whose ancestors were from equatoria

l Africa are present. What should be happening to the sickle-cell allele in the United States, and what should be happening to it in equatorial Africa?
Social Studies
1 answer:
lakkis [162]3 years ago
3 0

Answer:

Directional selection; stabilizing selection

Explanation:

  • The stabilizing selection is a result of the decrease of the population and causes genetic variation due to the natural selection.  
  • The directional selection of the genetic variation shifts to a new phenotype and on exposure to the environmental changes and both of these can lead to the natural selection and contribute to the variation of the population.
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Which advice would be best to give to the parents of a preschooler who want to help their child become a better reader in elemen
Anarel [89]

Talking with their preschoolers about signs in their environment and letting their kids know they like reading themselves are two things parents can do to help their kids develop a grasp of print.

Children continue learning to read in the first through third grades of early elementary school. It is a challenging procedure for some people but easy for others. During these formative years, care must be made to avoid overemphasizing the process of learning to read.

Reading for information and enjoyment helps youngsters to develop their reading interests and gives them the chance to put their reading abilities to use. Children in the primary grades should have access to reading materials that spark inquiry or build on their innate curiosity about the world.

Parents may and should encourage their children to develop a love of reading and to improve their reading abilities because reading is so crucial to academic success.

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5 0
1 year ago
A manager at a science museum wants to identify the most popular exhibits, so once every hour for six weeks she has volunteers c
dusya [7]

In social studies, especially those in which you want to analyze or investigate the behavior, in many cases recreating the situation to be studied in a laboratory or the interaction of the researcher with the subject under investigation may be impossible or alter the result leading to false conclusions In these cases, the researcher resorts to naturalistic observation, which consists of observing or studying the subject in their natural conditions, in their environment, thus avoiding a change in the behavior of the researched, either because of the artificial nature of the experiment or because of the presence of a stranger, the researcher, in the environment.

Answer

In this case, the use of another method such as an interview or survey can result in a change of behavior or response by the interviewee, thus observing and recording the number of visitors without intervening with them is making a <em>naturalistic observation</em>

3 0
3 years ago
The outcome variable in a question about causality is also referred to as​ what?
Artyom0805 [142]
The outcome variable in a question about causality is also referred to as​ the dependent variable. It <span>is what you measure in the experiment and what is affected during the experiment. Hope this answers the question. Have a nice day. Feel free to ask more questions.</span>
5 0
3 years ago
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mash [69]
Join the military in combat arms.
5 0
3 years ago
How could having productive arguments and learning to fact-check support the common good and promote a healthy society?
insens350 [35]
It would help because everyone would fall in line with the same mentality hope this helps
3 0
3 years ago
Read 2 more answers
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