As a result, in order to move past each other in an extremely crowded environment, they are forced to modify their behavior.

The long term effect of this program, still underway in 2009, is to create a less crowded, greener environment for future generations.

In a crowded urban environment, a little tolerance goes a long way.

When you know you're going to be in a crowded environment, the key is to be prepared.

This term can also describe any crowded environment, such as public transportation services that have extremely high riderships.

This helps loading and unloading when street parking in a crowded urban environment.

Certainly, one would hope to have more of it in less crowded environments.

Certain psychological traits would develop in people who must tolerate the demands of a crowded environment.

The crowded urban environment is a source of stress for many of us.

The home is a difficult, crowded environment, complete with children, pets and furniture that can be moved around.