The <u><em>correct answer</em></u> is:
He needs to select a more representative sample.
Explanation:
Choosing students from the basketball team for the sample he uses on a study of heart rates and exercise will be a biased sample. This is because students on the basketball team are potentially healthier than other students, which means that exercise will not have a large an effect on their heart rate as it would if they were not as healthy and not as physically fit.
In order to reduce the amount of bias, he should choose students from different groups throughout the school.
The variation that involves contracting each muscle group repeatedly with progressively less tension with each contraction is incremental muscle relaxation.
<h3>What is incremental muscle relaxation?</h3>
Incremental muscle relaxation is a type of variation during a physical exercise aimed at relaxing the muscles.
Incremental muscle relaxation is a fundamental component in any training exercise program.
Incremental muscle relaxation consists of relaxing certain groups of muscle fibers that have undergone rhythmic contractions.
Learn more about incremental muscle relaxation here:
brainly.com/question/731531
Answer:
The answers are in the PDF!
I hope I helped!
Codominance- Occurs when two of the same gene are present in a living thing, and both alleles are expressed separately in different parts of an organism.Instead of one trait being dominant over the other, both traits appear.
Eye strain - hope this helped
Answer:
The correct answer is option A. an immediate immune reaction to the initial infection with dengue virus.
Explanation:
The dengue is the virus infected disease that is caused by dengue virus and transmitted by the aedes mosquito. The dengue fever and dengue hemorrhagic fever are two type of dengue. DHF or dengue hemorrhagic fever includes second stage of the fever with plasma leakage from endothelium of blood vessels.
Thus, the correct answer is option A. an immediate immune reaction to the initial infection with dengue virus.
