| Gas heaters usually hiss when they operate and they usually require a venting system to avoid the buildup of dangerous byproducts. |
| She says the government needs to ban byproducts from cattle and similar animals from all livestock feed. |
| Microwave irradiation can also allow the use of less or no solvent and can produce fewer byproducts, giving a purer product. |
| Greenpeace found that perc breaks down into the toxic byproducts phosgene, vinyl chloride, carbon tetrachloride and trichloroacetic acid. |
| Bookstores are bursting with self-help books, most of which are products or byproducts of the psychology industry. |
| Developmentally speaking, bilinguals are unique listener-speakers and not simply byproducts of two or more monolinguals. |
