Explain why a scientist must conduct trials in humans before this procedure becomes a widespread medical treatment

testing on animals and on humans are different

Explanation:

If the testing through animals and/or artificial means turns out well and safe, then it is safe for human testing to work out how it will affect humans since we have a different physiology from animals.

Scientists need to repeat studies many times to prove their hypothesis. This single study only shows an effect in mice. The effect in humans may differ, so scientists need to conduct trials in humans to see whether the results are the same.

Explanation:

x = -6.5

explanation:

with this editor, you should be careful to put what you mean. 5/(2x - 7) = 3/(4x +14) is the way i will interpret it. cross multiply

5*(4x + 14) = 3*(2x - 7)       remove the brackets

20x + 70 = 6x - 21             add 21 to both sides

20x+ 70+21= 6x                 combine

20x + 91 = 6x                     subtract 20x

20x-20x+91=6x-20x           combine

91 = - 14x

x = - 91/14

x = - 6.5

answer:

0ng

Explanation:

that crazy