Many alkaloids are toxic to other organisms.

Many living organisms are able to produce crystals, for example calcite and aragonite in the case of most molluscs or hydroxylapatite in the case of vertebrates.

Many cnidarian species produce colonies that are single organisms composed of medusa-like or polyp-like zooids, or both.

Many of the most common primary pathogens of humans only infect humans, however many serious diseases are caused by organisms acquired from the environment or which infect non-human hosts.

Many purportedly irreducible structures can be found in other organisms as much simpler systems that utilize fewer parts.

Many limestones are composed from skeletal fragments of marine organisms such as coral or foraminifera.

Many types of microorganisms have intimate symbiotic relationships with other larger organisms ; some of which are mutually beneficial ( mutualism ), while others can be damaging to the host organism ( parasitism ).

Many observations have indicated that programmed cell death plays a considerable role during physiological processes of multicellular organisms, particularly during embryogenesis and metamorphosis.

Many properties of neurons, from the type of neurotransmitters used to ion channel composition, are maintained across species, allowing scientists to study processes occurring in more complex organisms in much simpler experimental systems.

Many nitrogen-fixing organisms exist only in anaerobic conditions, respiring to draw down oxygen levels, or binding the oxygen with a protein such as leghemoglobin.

Many complex multi-functional group molecules are important in living organisms.

Many organisms can easily break down starches into glucose, however, most organisms cannot metabolize cellulose or other polysaccharides like chitin and arabinoxylans.

Many photosynthetic organisms have adaptations that concentrate or store carbon dioxide.

Many transcription factors in multicellular organisms are involved in development.

Many organisms adapted to deep-water pressure cannot survive in the upper parts of the water column.

Many extant dinoflagellates are parasites ( here defined as organisms that eat their prey from the inside, i. e. endoparasites, or that remain attached to their prey for longer periods of time, i. e. ectoparasites ).

Many of these organisms are blind and rely on their other senses, such as sensitivities to changes in local pressure and smell, to catch their food and avoid being caught.

Many organisms develop swim bladders ( gas cavities ) to stay afloat, but because of the high pressure of their environment, deep-sea fishes usually do not have this organ.

Many other organisms living in the reef community contribute skeletal calcium carbonate in the same manner.

Many higher order organisms possess a chain of 104 amino acids.

Many wetland systems possess biofilters, hydrophytes, and organisms that in addition to nutrient up-take abilities have the capacity to remove toxic substances that have come from pesticides, industrial discharges, and mining activities.

Many of the Earth's elements and minerals ( or mineral nutrients ) are contained within the tissues and diets of organisms.

Many species of single-celled organisms exhibit different morphological forms.

Many years later I went to see S.K. in England, where he was living at Whiteleaf, near Aylesbury, and he showed me beside his cottage there the remains of the road on which Boadicea is supposed to have travelled.

Many of the individual projects for which development assistance is required call for expenditures over lengthy periods.

Many of the cells and microorganisms which are transparent to visible light, absorb or reflect the much shorter wavelengths of the ultraviolet spectrum.

Many companies have systems, particularly in R & D, which work more or less well, depending upon size and actual belief in the policy on the part of administration, as will be abundantly apparent in subsequent quotations.

Many years later ( on August 3, 1915 ), Lucy Upton wrote Winslow's daughter soon to be graduated from Smith College: `` While I love botany which, after dabbling in for years, I studied according to the methods of that day exactly forty years ago in a summer school, it must be fascinating to take up zoology in the way you are doing.

Many scholars consider modern anthropology as an outgrowth of the Age of Enlightenment, a period when Europeans attempted to study human behavior systematically, the known varieties of which had been increasing since the fifteenth century as a result of the first European colonization wave.

Many amateurs like to specialise in observing particular objects, types of objects, or types of events which interest them.

Many species have an erect woody stem which is covered with persistent dried leaves unless there have been fires, topped by a crown of long thin leaves.

Many theorems which are provable using choice are of an elegant general character: every ideal in a ring is contained in a maximal ideal, every vector space has a basis, and every product of compact spaces is compact.

Many of Christie ’ s books and short stories both set in the Middle East and back in England have a decidedly otherworldly influence in which religious sects, sacrifices, ceremony, and seances play a part.

Many parents today purchase “ Baby Signs ” DVDs and books which incorporate ASL signs for infant and toddler communication.

Many of these were part of the corruption indulged in by Scott and the Pennsylvania's president, J. Edgar Thomson, which consisted of inside trading in companies that the railroad did business with, or payoffs made by contracting parties " as part of a quid pro quo ", as biographer David Nasaw writes.

Many arguments from morality are based on morality normativity, which suggest that objective moral truths exist and require God's existence to give them authority.

Many states have Arbor Day although only Victoria has Arbor Week, which was suggested by Premier Dick Hamer in the 1980s.

Many ironclads were built to make use of the ram or the torpedo, which a number of naval designers considered the crucial weapons of naval combat.

Many stories have developed since the founding long ago to become a part of America's folklore and cultural awareness, and non-native American folklore especially includes any narrative which has contributed to the shaping of American values and belief systems.

Many GA-style guitars also have a convex back panel to increase the volume of space in the soundbox without making the soundbox deeper at the edges, which would affect comfort and playability.

Many pop songs are used as anthems, such as Queen's " We Are the Champions ", which is commonly used as a sports anthem.

Many defoliated forest areas were quickly invaded by aggressive pioneer species, such as bamboo and cogon grass, which make it unlikely the forests will be able to regenerate.

Many of the 5200's games appeared simply as updated versions of 2600 titles, which failed to excite consumers.

Many file archivers employ archive formats that provide lossless data compression to reduce the size of the archive which is often useful for transferring a large number of individual files over a high latency network like the Internet.

Many of the SIGs, like SIGGRAPH, SIGPLAN, SIGCSE and SIGCOMM, sponsor regular conferences which have become famous as the dominant venue for presenting innovations in certain fields.

Many Aleuts now live across the state and not only in the Aleutians which has helped to spread the arts of their people and to better develop methods of creating their arts.

Many amplifiers are ultimately slew rate limited ( typically by the impedance of a drive current having to overcome capacitive effects at some point in the circuit ), which sometimes limits the full power bandwidth to frequencies well below the amplifier's small-signal frequency response.

Many were especially critical of him following his remarks in the South Carolina primary, which Obama won.