I need a great deal of hard radiation to properly reproduce my parts-constant mutation and winnowing-that I may continue to evolve at a proper rate.

Young people lacking money and living space to properly reproduce is just one of many reasons the birth rate plummeted starting in the year 2005.

In space, T-cells (a part of white blood cells) do not reproduce properly.

Young people lacking money and living space to properly reproduce is just one of many reasons the birth rate plummeted during this decade.

A disruption, chemical, biological, or otherwise, in humans' ability to reproduce properly or at all.

Suzuki believed that a student must learn tonalization in order to properly reproduce and perform music (Lavie, Karen, New Zealand Suzuki Journal, 2005).

Ott discovered that even individual cells' ability to properly reproduce in both plants and animals (including human) is affected by variances in lighting as it entered the body through the eyes.

And soprano voices - very difficult to reproduce properly - emerged with flesh-and-blood palpability.

In space, T-cells (a form of lymphocyte) are less able to reproduce properly, and the T-cells that do reproduce are less able to fight off infection.

Their cells will not be able to reproduce properly and their bodies will simply stop functioning.