If there were a 10 percent tax on every pack of cigarettes John bought between age 22 and age 70, how much tax revenue would be raised from John’s cigarette purchases? How might such tax money be used to help reduce smoking rates?

What are chlorofluorocarbons and what impact do they have on the atmosphere?

Of is j/kg·k. if a 2.6 kg of isk to k,is ?

The gun from the crime scene shows tool marks where the serial numbers are ground off. there are also tool marks on the bullets left behind. what information can the tool marks on the bullets and gun provide about the crime? what type of evidence does this information provide, individual or class?