Heavy reliance on petrochemicals has raised concerns that oil shortages could increase costs and reduce agricultural output.
hˈɛvi ɹᵻlˈaɪəns ˌɔn pˌɛtɹoʊkˈɛmɪkəlz hɐz ɹˈeɪzd kənsˈɜːnz ðæt ˈɔɪl ʃˈɔːɹɾɪdʒᵻz kʊd ɪŋkɹˈiːs kˈɔsts ænd ɹᵻdˈuːs ˌæɡɹɪkˈʌltʃɚɹəl ˈaʊtpʊt.