An increasing amount of drugs taken by humans and animals make it into our streams and waterways, and pharmaceutical pollution has had catastrophic ecosystem consequences despite low levels of concentration in the environment. (sciencedaily.com)
It's great for playing on the commute, requiring a low level of concentration and no internet connection. (t3.com)
If there are not good reasons to maintain the current level of concentration, then we will discuss how to reduce this concentration. (financialplannerpasadena.com)