The first one is a.
2 is where water vapor is
Carbon monoxide is the most common type of poisoning by gases
<span>When the client is experiencing decreased nausea and vomiting, then the medication is doing what it is supposed to. Promethazine is an antihistamine and a sedative and, as such, is used to calm down the responses to nausea that can occur during stressful events such as labor.</span>