Bun and cheese are very yummy. is this gramaticaly correct?

Wats iqpow pls write 20 words for an answer

Jim has found that he must consume 2,300 calories a day to reach his health goals, but he doesn't want to give up his afternoon snack of pretzels. unfortunately, he tends to eat the entire bag — which amounts to 1,300 calories! what strategy should jim use to improve his habits?

The different forms of a gene for a given trait are called .