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Natural gas comes from <mask> types of wells.
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Testicles have <mask> important jobs in the body .
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Maps represent our <mask> dimensional world in two dimensions.
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Maps represent our three dimensional world in <mask> dimensions.
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Adolescent squirrels are sexually mature by <mask> months to one year of age.
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Adolescent squirrels are sexually mature by ten months to <mask> year of age.
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Most transistors have <mask> connections.
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Today there are <mask> main areas of focus in applied sports psychology.
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Reproductive maturity is reached at <mask> to six years in females and seven to nine years in males.
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Reproductive maturity is reached at four to <mask> years in females and seven to nine years in males.
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Reproductive maturity is reached at four to six years in females and <mask> to nine years in males.
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Reproductive maturity is reached at four to six years in females and seven to <mask> years in males.
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Shock occurs when there are intense experiences and <mask> defenses at all.
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Evolutionists note <mask> major periods of mass extinction in the fossil record.
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Most insects have <mask> or two pairs of wings.
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Most insects have one or <mask> pairs of wings.
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Rheas are brownish instead of black like the ostrich and have <mask> toes instead of two.
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Canaries have <mask> distinct feather types.
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Some orchid flowers bloom for <mask> week to up to four months depending on the species.
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Some orchid flowers bloom for one week to up to <mask> months depending on the species.
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Cars usually have <mask> wheels and an internal combustion engine.
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Oligosaccharides are of <mask> types, high mannose and complex .
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Zeolites have basically <mask> different structural variations.
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Connectionistic models resemble the brain in <mask> main aspects.
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Some species have flowers veined or feathered with <mask> colors.
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Tidal currents can exceed <mask> knots and standing waves, rips, can be more than ten feet high.
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Tidal currents can exceed three knots and standing waves, rips, can be more than <mask> feet high.
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Lake Superior is larger than any of the <mask> smallest Central American nations.
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Birds bitten by infected mosquitoes are infectious from <mask> to eight days.
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Birds bitten by infected mosquitoes are infectious from four to <mask> days.
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Diarrheal diseases result in the death of about <mask> million infants and children annually.
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Macular degeneration comes in <mask> forms, dry and wet.
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Rice is cultivated year round in <mask> growing seasons which are defined by the amount of rainfall.
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Human knowledge is limited to what can be experience with the <mask> senses.
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Temperature causes the matter to exist in <mask> different states.
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Some people have hay fever during all <mask> seasons.
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Women are <mask> times more likely to have the condition than men.
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All species have <mask> basic requirements for survival.
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Nymphs are baby lice that mature in about <mask> days.
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Large nests provide a home for up to <mask> million insects.
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Humpbacks use at least <mask> methods of feeding.
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Dehydration kills <mask> million children every year.
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Caffeine is an addictive substance, <mask> less than nicotine.
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Most black widows live only <mask> year, but they can live up to three years.
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Most black widows live only one year, but they can live up to <mask> years.
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Filarial parasites have an intriguing life cycle with <mask> clear developmental stages.
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Crustaceans have a body that is divided into <mask> segments, a head, thorax, and abdomen.
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Cholesterol comes from <mask> sources.
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Massive stars explodes after only a few <mask> million years as enormously energetic supernovae.
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Goblins are a little larger, usually <mask> to three feet, but sometimes much larger or smaller.
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Goblins are a little larger, usually one to <mask> feet, but sometimes much larger or smaller.
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Mountain sheep have <mask> sharp teeth at the front of the mouth.
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Deer ticks take <mask> years to complete their life cycle.
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Seahorses reproduce sexually, because they combine gametes from <mask> parents.
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Retinoic acid regulates oral epithelial differentiation by <mask> mechanisms.
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Spores have <mask> combinations of sexes.
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All polygons have <mask> sides.
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Chinese cuisine has <mask> tolerance for animal rights groups.
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Mothers begin to prepare girls to run a household when they are between <mask> and nine years old.
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Mothers begin to prepare girls to run a household when they are between seven and <mask> years old.
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Pride is the first sin in the <mask> deadlies.
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Nymphs pass through <mask> stages before becoming adults.
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Basketball is a team sport played in a gym with up to <mask> players on the court at a time.
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Choirs usually sing in several parts, most often in <mask> parts.
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Most infected cats show <mask> symptoms of the disease.
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Poisonous mushrooms can cause <mask> distinct clinical syndromes.
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Summers are hot and dry, winters intensely cold, with snow sometimes lying up to <mask> months.
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Dogs can begin gundog training as early as <mask> months of age.
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Cnidarians have more than <mask> true tissue layers.
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Epithelial cells come in <mask> shapes, squamous, cuboidal or columnar.
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Ions can consist of <mask> or more atoms.
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Cysts can remain viable in cold water for <mask> months.
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Diabetes can cause eye problems that have <mask> symptoms until the damage is well advanced.
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Least squares means of boar taint compounds in <mask> breeds of entire male pigs.
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Dual nationality is the simultaneous possession of <mask> citizenships.
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Hurricane season begins in <mask> weeks.
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Soil contains <mask> components that determine texture sand, silt, and clay.
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Cattle can have up to <mask> to ten years of grazing, after which a scrub savannah grows up.
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Cattle can have up to six to <mask> years of grazing, after which a scrub savannah grows up.
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Heavy chain has <mask> V region and three or more C-regions.
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Heavy chain has one V region and <mask> or more C-regions.
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Reptiles also have scaly skin and a <mask> chambered heart.
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Salicylic acid has a half life of about <mask> hours at therapeutic doses.
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Anaemia affects around <mask> billion people worldwide.
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Brambles are biennials that emerge in <mask> stages.
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Hogs have <mask> toes on each foot.
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Compound machines are <mask> or more simple machines working together.
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Plantains are available to be eaten in <mask> different states.
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Some alternative antibiotics require <mask> doses per day for ten days.
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Some alternative antibiotics require three doses per day for <mask> days.
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Altricial chicks are tended and brooded by female the first <mask> days.
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Mosquitoes probably live only about <mask> weeks.
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Resurrection Plants form straight stems which grow up to <mask> centimeters in length.
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Disc florets are usually actinomorphic, with <mask> petal lips on the rim of the corolla tube.
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Rhinos are ungulates, or herbivorous animals with <mask> toes.
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Cleavage is perfect in <mask> directions.
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Runways are busy places, even when there are <mask> planes around.
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Marriage is a sacred institution that unites <mask> soulmates.
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American men click on Internet sex sites <mask> times more often than women do.
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Essential oils enter the body in <mask> ways.
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