The answer is: The issue of endangering patients health with an unknown experimental treatment
Experimental treatment is still in the testing stat and still hasn't uncover all the possibilities that the treatment can cause to the patient.
Depending on the dosage and the genetic composition of the patients, experimental treatment cause a lethal effect to the patient. Because of this, the Scientific community require all experimental treatment shall be done to animals before it used to human patients.
When the patients have no choice for other treatments beside the experimental one, the researchers need to openly mention the possible negative effects to the patients.
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Answer:

You can solve this equation by applying the zero product rule.
Firstly, you equate the expression to 0 in order to combine both fractions into one. As shown in Step 2, you find the LCM of both fractions and multiply accordingly. In this case, the LCM of both fractions is 3n(3n+1). Hence you cross multiply.
Next, you eliminate the denominator in order to solve the equation more conveniently. As you multiply the fraction by the denominator on the LHS, you do that to the RHS as well to maintain balance. 0×3n(3n+1)=0, hence Step 3.
Then, you expand the parentheses using the distributive law of multiplication, resulting in a quadratic equation.
Lastly, you solve the quadratic equation.
The answer is n=-3
Surface culture is a tangible norm that is used to define the culture for example food, clothing, art.
Deep culture is ones thoughts, feelings, or personal opinion on that culture.
You could probably use the public education system for both of those definitions. Hope this helps!
If it doesn’t contain any of the following definition then it’s wrong
A planet is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit.