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White cells (leukocytes) are the protective cells in the blood stream. Leukocytes blood cells are white.
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Young roots and leaves are the major sites of gibberellin production.
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A wedge is made up of two inclined planes. A wedge is the name for a simple machine that consists of two inclined planes.
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Where do stratus clouds occur in the troposphere?
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What energy is stored in a person or object?
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Which of the following structures is not present in animal cells?
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Iguassu falls is the largest waterfall on the planet.
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They rely on simple diffusion, the passive movement of materials from an area of high concentration to an area of low concentration, to move gases and waste materials in and out of the cell. You call the movement of a substance from an area of a higher amount toward an area of lower amount diffusion.
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Food chains carry energy from producers to consumers.
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Where do the majority of species live?
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What term means controlling body temperature within a narrow range from the inside through biochemical or physical means?
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Blood from the lungs enters the left atrium of the heart. Blood from the lungs enters into the left atrium.
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Coal from this area is an important fuel source for the country's electric power plants. Coal is the source of most electricity.
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Ectotherms undergo a variety of changes at the cellular level to acclimatize to shifts in what?
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While spermatogenesis produces four haploid sperm cells, oogenesis produces one mature what?
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What is capable of altering the rate of time passing?
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Bees are naturalized on every continent except which?
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A lysozyme destroys bacteria by digesting their cell walls.
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Which characteristic do single-celled organisms and multicellular organisms have in common?
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A binary molecular compound is made up of two elements.
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What signals the secretion of gastric acid?
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In humans, the sperm cell is the only cell with the flagella structure that enables motility.
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Chemical elements and water are recycled through what cycle?
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What is a compound in which all of the atoms are connected to one another by covalent bonds?
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What is part of a cycle that holds an element or water for a long period of time called?
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Plasma is often considered the fourth state of matter (besides solid, liquid, and gas). Plasma completes the list: solid, liquid, gas.
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What is the term for the span in the life of an organism from one generation to the next?
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Altricial species are relatively helpless at birth and require considerable parental care and protection. Altricial organisms are helpless at birth and require lots of help from their parents.
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Mollusks are invertebrates such as snails, scallops, and squids. A scallop is a(n) mollusk.
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An ether is an organic compound in which two hydrocarbon groups are bonded to the same oxygen atom.
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Looking directly at what celestial object can cause blindness?
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The muscular dystrophies are a heterogenous group of inherited neuromuscular diseases characterized by weakness and wasting of muscles. Muscular dystrophy is a a wasting disease.
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Mars Mars, the red planet, is the fourth planet from the sun and the most Earth-like planet in our solar system. Mars is the fourth planet from the sun.
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In science, what do you call something that always applies under the same conditions?
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Introduction Scientists have found evidence of at least five 'mass extinctions' since the earth was formed. There have been five major massive extinctions since life began on earth.
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Secondary succession is the type of succession that happens after the destruction of a habitat.
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In humans, the sperm cell is the only cell with what structure that enables motility?
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Mars, the fourth planet from the sun, has long been a subject of intense scientific interest as one of the most Earthlike planets in our solar system. Mars is the fourth planet from the sun.
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What is the name of the second most electronegative element?
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Sexual reproduction always generates more genetic variation than asexual reproduction. The primary advantage of sexual reproduction when compared to asexual reproduction is that there is greater genetic variety in offspring.
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Hydroelectric power is derived by converting the potential energy of water to electrical energy using a hydraulic turbine connected to a generator. You can generate hydroelectric power with the energy found in flowing water.
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Thunderstorms can also cause disasters such as floods, fires, and tornadoes. A stream flooding is most likely caused by a thunderstorm.
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What is the main difference between eukaryotic and prokaryotic cells?
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What is continuously changing within a circuit in an analog signal?
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The sun and the moon appear to be about the same size in the sky because the moon is smaller in diameter and is closer to earth than the sun.
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How do coal and the sun compare as sources of energy?
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What feature of the land do contour lines show?
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Law of Conservation of Energy This law states that energy can be transferred from one system to another in many forms, however, it can not be created nor destroyed . Energy it can not be destroyed.
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The digestive system has three main functions. First, it breaks down food into molecules the body can use. Then, the molecules are absorbed into the blood and carried throughout the body. Finally, wastes are eliminated from the body. The main function of the human digestive system is to break down foods for absorption into the blood.
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Phagocytosis is the term for cellular eating.
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The dermis contains most of the structures found in skin.
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What do opposite charges do to one another?
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A type of what organism causes ergot, a disease that impacts crops directly and has more devastating effects on animals?
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The fertilized egg that sexually reproducing organisms begin life as is known as a(n) zygote.
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Snakes are which type of animal?
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Over 90% of the energy we use comes originally from the sun.
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Another unit of energy, used widely in the health professions and everyday life, is _______?
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Is the heat of reaction for an endothermic reaction is positive.
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A lipid is one of a highly diverse group of compounds made up mostly of hydrocarbons.
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Vesicles- vesicles are involved in cell-mediated transport (see endocytosis and exocytosis). Vesicles are used during endocytosis to allow molecules to enter the cell.
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Because trees add water vapor to air, cutting down forests leads to longer periods of drought.
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Water molds mostly live in water or moist soil.
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Like all tetrapods except birds and mammals, frogs possess a heart with three chambers.
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The two most important factors that help determine an area's climate are temperature-both average temperature and temperature extremes-and precipitation-both average precipitation and seasonal distribution. The climate is defined as the temperature plus precipitation of an area over a long period of time.
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What kind of behavior occurs only after experience or practice and describes most human behaviors?
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When water is heated by magma and makes it's way to the surface what is created?
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Crustaceans go through different larval stages.
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Roundworms exemplify what type of organization, where two or more types of tissues work together to perform a particular function as an organ?
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The main functions of epithelia are protection from the environment, coverage, secretion and excretion, absorption, and filtration.
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What are all scientific explanations and interpretations based on?
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The energy transformations that occur when a candle burns is described by: chemical energy from the wax is converted into light and heat energy.
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You call a type of mixture that has the same composition throughout a solution.
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Although they differ vastly in hardness, pencil lead and diamonds both contain what element?
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The first year after birth is called infancy.
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Opposite charges attract one another.
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Quarks are the basic particles that combine to form protons and neutrons; Protons and neutrons are made of quarks, which are fundamental particles of matter.
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The capillaries transports the oxygen into the blood vessels to be transported around the body. Oxygen is transferred through capillaries.
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What helps amplify the effects of extracellular signals?
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Gene expression and protein synthesis are usually considered the same molecular process.
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The primary elements of the sun are Hydrogen and Helium. The sun mostly made up of the element hydrogen.
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What action, performed multiple times daily, is the single biggest use of water in the home?
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As the population grows, competition for food grows.
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The atoms of a compound are held together by chemical bonds.
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What term is used to describe changes to an organism’s dna and are an important driver of diversity in populations?
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Where do most red algae species live?
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Earth is the only planet in the Solar System where the present surface temperature and pressure allow the three forms of water, solid (ice) , liquid (ocean) , and gas ( water vapor condensing in clouds ) to exist simultaneously . Earth is the only planet in the solar system that has water, which is essential for human life, present in all three of its states.
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The term raptors is used to describe birds that hunt, eat mammals, and other birds.
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The mineral quartz is used to produce glass.
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Four children born at one birth are called quadruplets.
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The process occurring at the axon terminal is exocytosis, which a cell uses to exude secretory vesicles out of the cell membrane. The cell expels waste and other particles through a process called exocytosis.
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What are composed of an oxygen atom that forms single bonds with two carbon atoms?
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USGS Water Resources of the United States http://water.usgs.gov/ Blue Planet Most of the Earth is covered with water, but most of this is in the oceans, and, being saltwater, is undrinkable. Most of earth's water is located in oceans
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Skeletal tisse is muscle tissue that is attached to the bone called.
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Seamounts that rise above the water surface are called islands.
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Which best describes a parallel circuit?
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A(n) increase in length happens to metal railroad tracks during the heat of a summer day.
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2.2 An object remains at rest or maintains a constant speed and direction of motion unless an unbalanced force acts on it. If no unbalanced force acts on an object the object remains at constant velocity or at rest.
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Density allows cut logs to float on water.
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Life cycle is the term for the span in the life of an organism from one generation to the next.
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Underneath the brain, there is a small, well-protected gland, the pituitary gland. The pituitary gland is in the brain.
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