Many different forms of storage, based on various natural phenomena, have been invented.

Many hydrocolloids are derived from natural sources.

Many constitutions contain provisions to curtail freedoms and criminalize otherwise tolerated behaviors under a state of emergency in the event of war, natural disaster or civil unrest.

Many of the proponents of Darwinism at that time, including Huxley, had reservations about the significance of natural selection, and Darwin himself gave credence to what was later called Lamarckism.

Many musicians feel the slower attack and percussive, woody tone of the upright bass gives it a more " earthy " or " natural " sound than an electric bass, particularly when gut strings are used.

Many specialized dienes have been developed to exploit this reactivity for the synthesis of natural products, e. g. Danishefsky ’ s diene.

Many deities could be given epithets that seem to indicate that they were greater than any other god, suggesting some kind of unity beyond the multitude of natural forces.

Many birds in other families are also commonly called " finches ", including some species in the very similar-looking waxbills or estrildid finches ( family Passeridae, subfamily Estrildinae ) of the Old World tropics and Australia ; several groups of the bunting and American sparrow family ( Emberizidae ); and Darwin's finches of the Galapagos islands, which provided evidence of natural selection and are now recognized to be peculiar tanagers ( Thraupidae ).

Many bodies consist of good sounding but inexpensive woods, like ash, with a " top ," or thin layer of another, more attractive wood ( such as maple with a natural " flame " pattern ) glued to the top of the basic wood.

Many objects in mathematics have natural group actions defined on them.

Many constructed languages have natural gender systems similar to that of English.

Many products are advertised as " herbal viagra " or " natural " sexual enhancement products, but no clinical trials or scientific studies support the effectiveness of these products for the treatment of erectile dysfunction, and synthetic chemical compounds similar to sildenafil have been found as adulterants in many of these products.

Many Hindus see God's direct involvement in this process ; others consider the natural laws of causation sufficient to explain the effects of karma.

Many natural structures, including human bodies, follow a certain handedness, but it was widely assumed that nature did not distinguish the two possibilities.

Many of the humans-turned-sharks are described as having skin patterns that no natural sharks have: similar to the cloth patterns of blankets that are wrapped around infants.

Many complex natural and man-made systems can demonstrate metastability.

Many natural computer science problems are covered by the class NP.

Many challenges in NLP involve natural language understanding -- that is, enabling computers to derive meaning from human or natural language input.

Many of these are still extracted from natural sources because they would be far too expensive to be produced artificially.

Many materials, both natural and synthetic, exhibit piezoelectricity:

Many economists working within the neoclassical paradigm argue that there is a natural rate of unemployment which, when subtracted from the actual rate of unemployment, can be used to calculate the negative GDP gap during a recession.

Many mythologies focus on explanations of the universe, natural phenomena, or other themes of human existence, often ascribing agency to one or more deities or other supernatural forces.

Many professionals in this discipline attempt to find general rules that apply to all natural languages.

Many sulfur compounds are odiferous, and the smell of odorized natural gas, skunk scent, grapefruit, and garlic is due to sulfur compounds.

Many of these solutions aim to control the Volatile Sulfur Compound ( VSC )- creating anaerobic bacteria that live in the mouth and excrete substances that lead to bad breath and unpleasant mouth taste.

Many followers of Buddhism observe a code of conduct known as the Five Precepts, of which the fifth precept prohibits consumption of intoxicating substances ( except for medical reasons ).

Many mineral groups and species are composed of a solid solution ; pure substances are not usually found because of contamination or chemical substitution.

Many substances can also induce, inhibit or compete with these enzymes further affecting ( sometimes dangerously ) methadone half-life.

Many authorities say that in the limit, the cost of self-replicating items should approach the cost-per-weight of wood or other biological substances, because self-replication avoids the costs of labor, capital and distribution in conventional manufactured goods.

Many industrial processes rely on reactions using chemicals dissolved in water, suspension of solids in water slurries or using water to dissolve and extract substances.

Many landfills now require countermeasures against groundwater contamination, an example being installing a barrier along the foundation of the landfill to contain the hazardous substances that may remain in the disposed waste.

Many substances can form gels when a suitable thickener or gelling agent is added to their formula.

Many criminal originations rely on their huge profits from selling illegal substances ; decriminalization would be a significant blow to the economics of these corrupt organizations.

Many substances regarded as poisons are toxic only indirectly, by toxication.

Many of the thousands of people crossing the Sonoran desert to work in U. S. agriculture or to smuggle controlled substances seek emergency assistance from the Tohono O ' odham Police Department when they become dehydrated or get stranded.

Many variations of the GTT have been devised over the years for various purposes, with different standard doses of glucose, different routes of administration, different intervals and durations of sampling, and various substances measured in addition to blood glucose.

Many salt solutions and molten polymers are non-Newtonian fluids, as are many commonly found substances such as ketchup, custard, toothpaste, starch suspensions, paint, blood, and shampoo.

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 nonmetallic substances also sinter, such as glass, alumina, zirconia, silica, magnesia, lime, ice, beryllium oxide, ferric oxide, and various organic polymers.

Many plants have evolved substances, like polygodial, which prevent insects from eating, but do not kill them directly.

Many structural alloys corrode merely from exposure to moisture in the air, but the process can be strongly affected by exposure to certain substances.

Many TPs function as gateways or " loading docks " to deny or permit the transport of specific substances across the biological membrane, to get into the cell, or out of the cell as in the case of waste byproducts.

Many of the substances below are known to cause anterograde amnesia and retrograde amnesia.

Many biological substances, for example proteins, easily create foam on agitation and / or aeration.

Many other cultures have chewed gum-like substances made from plants, grasses, and resins.

Many of the superhumans on Earth owe their powers to the " metagene ", a genetic feature of unknown origin, which causes some people to develop superpowers when exposed to dangerous substances and forces.

Many countries have banned the major substances for which this book gives directions for synthesis, such as 2C-B, 2C-T-2, and 2C-T-7.

Many of the chemical substances are toxic.