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(c) Life history involving deep water [1] (c) Neuston may also occupy deep water for one part of their life history (a hypothesis proposed for Velella ) [ 128 ] (d) these deep-water habitats may allow them to take advantage of counter currents for transport in the direction opposite surface currents (a hypothesis proposed for Velella ) [ 129 ]
According to this theory, living things may come forth from nonliving things in a manner roughly analogous to the "enformation of the female matter by the agency of the male seed" seen in sexual reproduction. [18] Nonliving materials, like the seminal fluid present in sexual generation, contain pneuma (πνεῦμα, "breath"), or "vital heat".
This provides growing conditions for future generations and forms a habitat for many other species. [23] Long-tailed broadbill building its nest The habitat of a species describes the environment over which a species is known to occur and the type of community that is formed as a result. [ 24 ]
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
The water cycle, is the continuous movement of water on, above, and below the surface of the Earth. Water can change states among liquid, vapour, and ice at various places in the water cycle. Although the balance of water on Earth remains fairly constant over time, individual water molecules can come and go.
The undersea living experiment also had two other structures, one a submarine hangar that housed a small, two-man submarine named SP-350 Denise, often referred to as the "diving saucer" for its resemblance to a science fiction flying saucer, and a smaller "deep cabin" where two oceanauts lived at a depth of 30 metres (100 ft) for a week.
In biology and ecology, a resource is a substance or object in the environment required by an organism for normal growth, maintenance, and reproduction.Resources can be consumed by one organism and, as a result, become unavailable to another organism.
In traditional agriculture, some plants have mutualistic relationships as companion plants, providing each other with shelter, soil fertility or natural pest control. For example, beans may grow up cornstalks as a trellis, while fixing nitrogen in the soil for the corn, a phenomenon that is used in Three Sisters farming .