Epa disinfectants are categorized according to their toxicity. the most toxic category is ?

Brainliest what are fingernails made of?

Early treatment for mental illness involved because doctors believed that doing this would drain the mental illness out of the person’s body.

Felicia has a respiratory infection and has been coughing up a lot of mucus. she knows this means that her respiratory system is working to restore balance by getting rid of the invasive materials from her lungs. how does this happen?