What is the value of x .

Did the universe cool off or get hotter as it expanded after the 'big bang"?

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 .