OPPORTUNITY COST
\ɒpətjˈuːnɪti kˈɒst], \ɒpətjˈuːnɪti kˈɒst], \ɒ_p_ə_t_j_ˈuː_n_ɪ_t_i k_ˈɒ_s_t]\
Word of the day
Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.