Biology involves working with organisms that, like infants, need attention at specific times.
On the opposite side sits the small laboratory of Don and Andrea Stierle, whose stacks of plastic Petri dishes are smeared with organisms pulled from the pit.
That is, if you mentally replace cities with organisms and city size with body weight, the mathematical pattern remains the same.
The rate of tumbling varies, with organisms tumbling most in the absence of attractants and in the presence of repellents.
The whole of the environment is, in fact, filled with organisms and objects that can transmit infectious agents to humans.
Brood care such as this is usually associated only with organisms that produce a small number of eggs.
The typical ecosystem is filled with organisms that are linked in some way — one preys on the other, or lives off the other parasitically, or depends on the other in some way.
The desert is not barren but teeming with organisms like algae, mosses and lichens that act as filaments holding a floor of sand and gravel together.
These increases may have developed as a predator-avoidance adaptation, with organisms evolving that were capable of burrowing into sediment, but the activity had far-reaching effects.
Biological warfare is generally conducted with organisms that aren't visible to the naked eye, but Hannibal was not a man of small gestures.
Alternatively, opportunistic infections with organisms such as cytomegalovirus, or antibiotic-associated Clostridium difficile may cause colitis.
