Many dogs suffer from allergies to environmental substances like pollen and even food sources like chicken proteins. (nextgendog.com)
Stay away from toxic substances such as bug sprays or other environmental substances that could harm your developing baby. (blog.advocatesaz.org)
The fact that children are smaller in size means that their skin presents a large surface area relative to their body weight for absorption of environmental substances.» (thefashionablehousewife.com)