Answer:
d. TD-50 and ED-50
Explanation:
According to the United States National Library for Medicine, the Margin of safety for drugs is calculated using the formula TD-50 divided by ED-50
Where TD is the Toxic Dose while the ED is defined as the Effective Does or Does for Therapeutic response.
Hence, in this case, the correct answer is option D.
reduced animal habitats
A
The Plan represented one of multiple early attempts to form a union of the colonies "under one government as far as might be necessary for defense and other general important purposes."
plastics and chemicals