It is called THERAPEUTIC INDEX. Therapeutic index is the comparison of the amount of a particular drug that causes the desired therapeutic effects and the amount that causes toxicity. The index can be low or high. A drug with a low therapeutic index will require only a small increase in dose to produce toxic effects in users.
Answer: A I think
Explanation: I'am really sorry if i'am wrong
For prey: it's used for hiding from predators
For predators: it's used to sneak and pounce on the prey
