The biome that exist closest to the Earth's poles are descibed as polar
It is known as structurlism
1) carries food and oxygen to the different cells of the body; 2) carries body wastes away; 3) protects the body from diseases; and 4) serves as the body's defense system.
it is one of the transport systems of the human body that is composed of the heart, the blood and the blood vessels. Its functions include: 1) carries food and oxygen to the different cells of the body; 2) carries body wastes away; 3) protects the body from diseases; and 4) serves as the body's defense system.
<span>No.The involuntary muscles of the muscular system are not striated or furrowed.
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<span><span>These muscles that are
not striated are very smooth to the sight which is why they are also
called Smooth muscles.</span> Involuntary muscles
are not striated. Even among the striated muscles that are voluntary,
the heart which is also a muscle, is involuntary.
On the other hand the striated muscles, which
are voluntary are highly fibrous and their primary function is to move
the body voluntarily, and producing heat as a result of this muscle
action.
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Answers
When doing medical research with human subjects, the following are unavoidable limitations;
It’s often impossible to repeat trials on the same subjects.
Subjects may report an inaccurate medical history.
It can be difficult to control all possible variables
There are ethical or privacy concerns to consider.
Explanation
When doing a medical research that involves human subjects it should be voluntary, informed and consent. The researchers should respect the persons treated as autonomous agents. The volunteers should be protected from physical, mental and emotional harm. The benefits should outweigh the costs.
