<span>prediction made by a researcher regarding a positive or negative change, relationship, or difference between two variables of a population</span>
The correct answer is B. Genetics
Explanation:
In health, a risk factor is a variable that can make a patient more likely to develop a disease or condition. Additionally, some of these factors can be controlled or changed by the patient, while others cannot be modified. Factors that can be controlled include stress, diet, weight, alcohol intake, and habits. This does not apply to factors such as age or genetics, for example, in the case of genetics, this is determined by the genes of each parent when a human being is formed, and therefore there is not any way to change this; although factors such as diet, stress, or smoking affect the expression of mutations in genes. Thus, the risk factor Jack has no control over is genetics.
The inner lining of blood vessels is called the inner lining of blood vessels is called Endocardium .
The endocardium is the innermost layer of tissue that lines the chambers of the heart. Its cells are embryologically and biologically similar to the endothelial cells that line blood vessels. The endocardium also provides protection to the valves and heart chambers.
To know more about Endocardium here
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Raw materials (reactants) used for photosynthesis are Carbon Dioxide and Water. These are the same substances which are the product of respiration.
D, Both A and C, if you watched ms q's nice video, she basically gave this answer right out
