Which is one characteristic of producers? They recycle nutrients.

They do not eat other organisms.

They break down waste for energy.

They use other organisms for energy.

That would be A

Explanation:

They recycle nutrients back into the soil

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.

the answer would be..

b. sucking