If your facility incorporates a laminar flow cleanroom, these MAGNEHELIC and PHOTOHELIC differential pressure gauges can help you maintain the positive pressure necessary to block inrushing contaminants that can damage sensitive materials and operations.
The definition of life-history patter is: an organism's pattern of reproduction; may be rapid or slow (short or long).ong (short) life-history patterns are large species that live in more stable environments that usually have slow life-history patterns. Elephants, bears, whales, humans, and plants, such as trees are long lived.
For most of Earth's history, evolution has been a slow progression. The Cambrian Explosion, however, was a rapid evolution period starting 542 million years ago. Life expanded from simple, single-celled organisms to every current phylum of life known today over the course of roughly 40 million years.