食べ物が噛みにくいのです。

food

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

to bite; to chew; to gnaw; to crash against (e.g. of waves); to break onto (shore); to engage (of cogs, zippers, etc.); to mesh; to fit together; to be involved in; to fumble one's words (during a play, broadcast, etc.); to falter with one's words; to strongly confute; to argue down; to rebuke; to scold harshly

hateful; abominable; poor-looking; detestable; amazing; fantastic; admirable; lovely; wonderful

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

be; is