Answer:
Subsistence agriculture
Explanation:
occurs when farmers grow food crops to meet the needs of themselves and their families on smallholdings. Subsistence agriculturalists target farm output for survival and for mostly local requirements, with little or no surplus. ... Most subsistence farmers today operate in developing countries.
If you wanted an explanation.
The antigen's foreignness is the most important determinant of immunogenicity when considering an antigen.
An antigen in immunology is a molecule, molecular structure, foreign particle, pollen grain, etc. that may attach to a particular antibody or T-cell receptor. Antigens within the body may cause an immunological response.
Antigens are outside elements. Normally, the body's defence cells don't react to molecules that belong to it (self antigen). A substance's antigenicity is often correlated with its foreignness . When compared to antigen from other members of the same species, it is less antigenic.
A foreign substance must make up the immunogen. Only substances that are not normally found in the body or exposed to the cells of the particular immune system trigger immune reactions. The immune system will distinguish between "self" and "non-self" in normal circumstances.
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Most national cross-sectional studies indicate that children who spend more time with media are <u>more likely</u> to be overweight than children who do not.
<h3><u>Cross-sectional research: what is it?</u></h3>
A cross-sectional study is a sort of observational research that examines data of variables gathered at one specific point in time across a sample population or a pre-defined subgroup.
Transverse analysis, cross-sectional analysis, and prevalence studies are other names for this sort of research. Even though it doesn't entail running experiments, cross-sectional research is frequently used by academics to understand outcomes in the physical and social sciences as well as many business domains.
<h3><u>Cross-sectional study characteristics.</u></h3>
A cross-sectional study must have, among other things:
- With the same set of data over a predetermined time frame, researchers can conduct a cross-sectional study.
- While similar studies could focus on the same variable of interest, each one looks at a different group of people.
- Contrary to longitudinal investigations, where variables can vary over the course of extended research, the cross-sectional analysis evaluates themes during a single instance with a fixed start and stopping point.
- In cross-sectional studies, one independent variable and one or more dependent variables can both be examined.
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The preclearance requirement was included in the Voting Rights Act to ensure that states that had previously restricted the political participation of minorities could not use redistricting for partisan gain and against the interest of minority groups.
The second one is the correct answer. b.) <span>a sold computer.</span>
