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Tadpoles metamorphose in about <mask> months. | three |
Rattlesnakes reach sexually maturity at about <mask> years of age. | three |
Women are <mask> times more likely to suffer from the disease as men. | nine |
Active acne is the presence of more that <mask> acne lesions at any given time. | ten |
Depression is caused by conflict among the <mask> divisions of the mind. | three |
Ice causes <mask> types of injury to branches and trunks. | two |
Apical meristems give rise to <mask> primary meristems. | three |
Peachicks stay Juvenile until they'r <mask> years old and can mate. | three |
Pineapple plants have <mask> different kinds of roots. | two |
Most men have <mask> testes. | two |
Most national flags use <mask> or more of only seven basic colors. | one |
Most national flags use one or more of only <mask> basic colors. | seven |
Sticklebacks make up <mask> genera, most of which have just one species. | five |
Sticklebacks make up five genera, most of which have just <mask> species. | one |
Vegans are the strictest of all, eating <mask> foods of animal origin whatsoever. | no |
Spiders have eight legs and <mask> main body parts. | two |
Lao families average <mask> persons to a household. | seven |
Relative fitness is <mask> for a sterile organism, even if it is robust and long-lived. | zero |
Antibodies are like heat-seeking missiles that <mask> in on a particular virus and kill it. | zero |
Every nuclear reactor produces enough plutonium to make a bomb, about every <mask> days. | ten |
Healthy children get at least <mask> colds a year. | six |
Wheat has <mask> distinct growing seasons. | two |
Dainty violas grow to <mask> inches tall. | four |
Bats require <mask> different roost types, day and night. | two |
Female mealybugs have only <mask> nymphal stages. | three |
Most babies double their birthweight by <mask> to five months. | four |
Most babies double their birthweight by four to <mask> months. | five |
Ring modulation is the multiplication of <mask> signals. | two |
Depth perception is the visual ability to perceive the world in <mask> dimensions. | three |
Country dancing is danced in sets, usually of <mask> couples. | four |
Troxel helmets have <mask> padding systems. | two |
Juvenile eagles then leave the nesting area within <mask> months. | two |
Ozone is a gas that is formed in the atmosphere when <mask> atoms of oxygen combine. | three |
Aromatherapy works <mask> ways, by inhaling it and absorbing it. | two |
Vietnamese women are more than <mask> times as likely to suffer cervical cancer. | five |
Gas occupies some volume in <mask> dimensional space. | three |
Elastic cartilage is found in only <mask> locations. | two |
Scientists say there have been <mask> ice ages in the past. | three |
Kittens start hunting with their mother around <mask> months of age. | five |
Health is the harmonious balance of <mask> important forces acting in the body. | three |
Braille is based on different combinations of <mask> dots. | six |
Yoga says that there are <mask> major tendencies which bear upon personality and behavior. | four |
Black people are <mask> times less likely to be employed than whites with similar qualifications. | three |
Pups average <mask> feet in size and weighing thirty pounds at birth. | three |