What is a reservoir fit carbon and nitrogen, but not phosphorus?

The atmosphere is a reservoir for carbon and nitrogen and cannot be a reservoir for phosphorous. This is because the phosphorous cycle does not include gaseous phase.

Explanation:

the most logical answer would be a

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )