The answer would be Prevent yourself from knowing what was in the pill bottles, and distributed the bottles randomly to the subjects
When researcher know which group got the treatment and which group got placebo, they might be biased. It will be better if the researcher is "blinded" and ask third party to help labeling the drug. The drug should be distributed randomly to makes the subject in control and treatment group as similar as possible.
If the blood vessels are replaced with collagen connective tissue, they will no longer be elastic and become hard, so the vessels will lose their ability to stretch. This hampers performance.
What is the difference between connective tissue, collagen fibers, and elastic fibers?
- Collagen fibers are the strongest and most abundant of all connective tissue fibers. These are fibrous proteins and are secreted into the extracellular space and they provide high tensile strength to the matrix.
- Elastic fibers are long and thin fibers that form a branching network in the extracellular matrix. They help the connective tissue to stretch and recoil.
Learn more about collagen fibers at brainly.com/question/13683144
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<span>Topographic maps. It is a map that shows elevation of the earths surface by displaying it with distance between lines. Shorter distance from lines means it is steeper.
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Answer:
I believe it's c I could be wrong but I'm pretty sure
The function of the thyroid gland<span> is to take iodine, found in many foods, and convert it into </span>thyroid<span> hormones: thyroxine (T4) and triiodothyronine (T3). </span>Thyroid<span> cells are the only cells in the body which can absorb iodine</span>
