The answer is b. as a whole, the species is mutually beneficial to carry on each others traits and exist in the same ecosystem.
<u>Stimulants </u> often cause overactive eye movement
Ans (A)
Stimulants are a class of psychoactive drugs that increase the brain activity. They work by acting on the central nervous system and increase the level of mental alertness and impart heightened cognitive functions. Stimulants like nicotine and cocaine cause overactive eye movement.
A volatile acid is an acid that can leave solution and enter the atmosphere.