<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.viwango vya kuzaa nchini merika vimeanguka kwa rekodi za chini, na hii inaweza kuhusishwa na ukweli kwamba watu wengi wanachagua kutokuwa na watoto.  <response>: the conversation fertility rates in the united states have plunged to record lows, and this could be related to the fact that more people are choosing not to have children. 