Why are drugs like depressants described as the opposite of amphetamines?
a. depressants can induce feelings of euphoria while stimulants can cause severe pain.
b. depressants can result in death while stimulants cannot.
c. stimulants slow breathing and heart rate while depressants increase those functions.
d. stimulants increase breathing and heart rate while depressants slow these functions. select the best answer from the choices provided. a b c d?

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.

i think that it is c, d, and e, hope this