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  • Science
    The repeating sequence of physical and chemical properties among the elements, when they were listed in order of increasing atomic mass, was what led to the creation of the Periodic Table of the...

    Asked by enotes on via web

    1 educator answer

  • Science
    Upwelling refers to the process of deeper ocean water rising upward to replace surface water that has been displaced by blowing winds. Upwelling can occur in coastal areas and out in the open...

    Asked by user8237237 on via web

    2 educator answers

  • Science
    Prehistoric Oklahoma is a term covering several billion years, from the origin of our planet through the sixteenth century. The oldest remaining geological layers are igneous and metamorphic rocks...

    Asked by chanman15 on via web

    1 educator answer

  • Science
    I believe that this question is asking about the moon that is named Miranda. Miranda is one of the moons of Uranus, and it was discovered in 1948 from the McDonald Observatory in Texas. Many of...

    Asked by enotes on via web

    1 educator answer

  • Science
    This question involves the law of interaction between the two point electric charges, also known as Coulomb's Law. It states that the force between the two point charges is inversely proportional...

    Asked by enotes on via web

    1 educator answer

  • Science
    Rock layers, or strata, are built up from material that is deposited on top of the existing layers. This means that the oldest layers are on the bottom, and younger rocks are on top. There are...

    Asked by user7796712 on via iOS

    1 educator answer

  • Science
    The question is correct in stating that the liver plays an important role in detoxification of harmful substances. The liver, being an organ, is made up of liver tissue, and tissue is made of...

    Asked by laraaathompson on via iOS

    1 educator answer

  • Science
    As you pointed out, the F1 genotype is AaBbCc. Each F1 can produce eight unique gametes, which are equally probable: ABC, ABc, AbC, aBC, abC, aBc, Abc, and abc. Thus a cross between two F1...

    Asked by user1852445 on via web

    1 educator answer

  • Science
    A hippopotamus is a mammal; therefore, the heart of a hippopotamus is a four-chambered mammalian heart. A four-chambered heart is an incredibly efficient and well-designed heart because it prevents...

    Asked by enotes on via web

    1 educator answer

  • Science
    The acidity of a substance is measured on the pH scale. That scale goes from 1 to 14. A pH of 7 is neutral. Anything greater than 7 is basic, and anything less than 7 is acidic. This means that an...

    Asked by enotes on via web

    1 educator answer

  • Science
    The similarity between refraction and diffraction is that both of these phenomena involve the ability of a wave to change the direction of its propagation. In case of refraction, a wave changes...

    Asked by Krishiv Malik on via web

    1 educator answer

  • Science
    One can think of disasters as events that are sudden, unplanned, and cause enormous damage to property and life. Based on the causal factors, disasters can be divided into two categories: natural...

    Asked by enotes on via web

    1 educator answer

  • Science
    Let's start with what a hiccup is. A hiccup is a short, sudden burst of inhalation. Breathing is controlled by the diaphragm. It's a large, dome-shaped muscle that separates the chest from the...

    Asked by enotes on via web

    1 educator answer

  • Science
    Most of the recent understandings of particle reactions (and their energy levels) come as a result of experiments using particle accelerators. There are about 30,000 of these devices in use...

    Asked by abdullah3437 on via web

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  • Science
    Democritus's view was that everything was composed of "atoms," which, he thought, were indivisible particles. The term "atom" comes from the Greek word "tomos," which means "slice" or "section."...

    Asked by chanelaug2004 on via web

    1 educator answer

  • Science
    In order to identify an element based on reactivity, you need to refer to the periodic table. Each numbered column in a periodic table is a group. Each row is known as a period. When it comes to...

    Asked by enotes on via web

    1 educator answer

  • Science
    Arguments can likely be made for saying that methanol is both good and bad for the environment. Like other fuels, methanol burns. As a result, it contributes to carbon emissions and pollution....

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  • Science
    Benzene is a significant compound in organic chemistry, made up of a ring of six carbon atoms with a hydrogen atom attached to each one. It can be helpful to visualize the structure of the compound...

    Asked by enotes on via web

    1 educator answer

  • Science
    As the question implies, there are pros and cons to using stem cells in medicine. As scientists gain more knowledge about stem cells, some of those cons may no longer be an issue. Pro: Using stem...

    Asked by enotes on via web

    1 educator answer

  • Science
    In general a process that releases heat can be harnessed to generate electricity. The heat is transferred to water, turning the water to steam. The expansion of water to steam is used to turn a...

    Asked by fayzzahra on via web

    1 educator answer

  • Science
    Antony is Caesar’s ally and supporter. After Caesar's assassination, Antony first pretended to shake hands with the senators, saying that all that he asked for was to give a speech at Caesar's...

    Asked by enotes on via web

    1 educator answer

  • Science
    The blood type O negative is considered the universal donor type. There are four blood types: A, B, AB, and O. Additionally, blood is categorized according to the presence or absence of a red blood...

    Asked by enotes on via web

    2 educator answers

  • Science
    By "unbreathed" I assume you mean the air that is present in our atmosphere and around us. The air (or unbreathed air) is composed of a number of gases. The chief among them is nitrogen (chemical...

    Asked by enotes on via web

    1 educator answer

  • Science
    There is evidence that early Earth was different than Earth today. The atmosphere had no free oxygen—instead it consisted of methane, ammonia, water vapor, and hydrogen gas. It has been proven by...

    Asked by enotes on via web

    1 educator answer

  • Science
    Marigolds are very popular plants in gardens and are very easy to grow. Some even come back the following year as they self-seed. They keep pests away from the garden due to their pungent aroma....

    Asked by enotes on via web

    1 educator answer

  • Science
    It is a really big universe that we live in, and there are a lot of planets that are out there. It is possible that there is a planet out there that exists that has more moons than any other known...

    Asked by enotes on via web

    1 educator answer

  • Science
    Deoxygenated blood from the body will enter the heart's right atrium. The atria (left and right) will contract and send blood into the ventricles. Then, blood that is in the right atrium will move...

    Asked by dawnharley78 on via iOS

    1 educator answer

  • Science
    The respiratory system has organs that work in unison and if one or more fails to work properly, respiration could be compromised leading to illness or death. The nose is used for inhalation and...

    Asked by enotes on via web

    1 educator answer

  • Science
    Of the three major types of rock formations (igneous, sedimentary, and metamorphic), sedimentary rocks are most likely to contain fossils. Fossils are formed when the bodies or remnants of living...

    Asked by enotes on via web

    1 educator answer

  • Science
    To find the direction of displacement, you start by plotting the steps Bob has walked. After going 7 meters west, he turned 25 degrees south, so you must put that angle in his path. Then, he...

    Asked by tncooper03 on via web

    1 educator answer

  • Science
    The water cycle is a biogeochemical cycle that describes the movement of water through the biotic and abiotic components of our planet. The terrestrial biota is a key component of this process....

    Asked by enotes on via web

    1 educator answer

  • Science
    An organism that is produced by sexual reproduction receives a set of chromosomes from each of its parents' sex cells or gametes. These gametes are known as haploid with a single set of...

    Asked by enotes on via web

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  • Science
    Bacteria often get an unjustly bad reputation as being harmful; while some strains of bacteria can surely lead to infections, illness, or other unpleasantness, there are many strains that are...

    Asked by enotes on via web

    1 educator answer

  • Science
    A reaction will occur if the reactants are at or above the activation energy. This energy level is different for every set of chemicals and is related to temperature. Hotter reactants will react...

    Asked by user2014138 on via web

    2 educator answers

  • Science
    The easiest way to separate common salt and ammonium chloride from a mixture is through the process of sublimation. Sublimation is the process in which a solid substance is directly converted to...

    Asked by enotes on via web

    1 educator answer

  • Science
    There are two reasons why smooth surfaces like tiles have less friction than coarse surfaces like asphalt. The first reason is Newton's third law of motion. This law states for every action, there...

    Asked by enotes on via web

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  • Science
    A seed is the result of fertilization in plants due to the process of sexual reproduction. Once a flower is pollinated, the pollen germinates downward in the flower to the ovary where ovules are...

    Asked by enotes on via web

    1 educator answer

  • Science
    There are a number of questions one can ask about respiration in plants. Here are some of them: How do plants respire? What is the difference between photosynthesis and respiration? Do plants need...

    Asked by enotes on via web

    1 educator answer

  • Science
    There are a lot of possibilities: We are going to (someday) run out of our current energy resources. Much of the world's energy depends on fossil fuels, and those are finite resources. Once...

    Asked by enotes on via web

    1 educator answer

  • Science
    I am not sure if this question is asking about force and physics or if this question is leaning more toward physical forces that change the shape of Earth's surface. By definition, a force is...

    Asked by enotes on via web

    1 educator answer

  • Science
    The digestive system is made up of various organs that are all supplied blood by the circulatory system; however, I don't think that is the intended connection that the question implies. Food...

    Asked by user3414068 on via web

    1 educator answer

  • Science
    Magnets have the following properties: 1. Magnets attract ferromagnetic materials, such as iron, nickel, and cobalt. 2. All magnets have two poles: north pole and south pole. There are no magnets...

    Asked by mariamsaleem72 on via iOS

    1 educator answer

  • Science
    The mitochondrion is a round or oval organelle found within cells that have well-defined nuclei, also known as eukaryotic cells. The mitochondrion is responsible for the production of energy to...

    Asked by enotes on via web

    2 educator answers

  • Science
    A mixture, in chemistry, contains two or more substances that are not chemically bound to each other. You can usually identify the substances in a heterogeneous mixture simply by looking at it: the...

    Asked by enotes on via web

    1 educator answer

  • Science
    Osmosis does occur in animals. Osmosis is the movement of water across a semi-permeable membrane from areas of high water concentration to areas of lower water concentration. Osmosis will stop...

    Asked by tunks60 on via web

    1 educator answer

  • Science
    This question is worded a bit oddly. It's unclear if the question is meaning to ask about polar bear adaptations that limit its spread to other habitats, or if the question is asking about...

    Asked by gaviaguilar0011 on via iOS

    1 educator answer

  • Science
    Yes, chloroplasts and mitochondria are similar to each other. There are massive differences between the two and what they do, but it is possible to find similarities between them. The following...

    Asked by rayarnold on via iOS

    2 educator answers

  • Science
    The Milgram Experiment focused on the effects of authority on individual conscience—if the boss tells us to do something we know is wrong, can we justify obeying? In this experiment, the test...

    Asked by mahreehouston on via web

    1 educator answer

  • Science
    Methane is composed of four hydrogen atoms and a single carbon atom. It is a colorless, flammable, nontoxic gas. It is considered an odorless gas despite the fact that most people say it smells...

    Asked by stephenhlesq on via web

    1 educator answer

  • Science
    The answer is A: Natural Gas. To understand why, first consider the definition of a non-renewable energy source: A non-renewable resource (also called a finite resource) is a resource that does...

    Asked by enotes on via web

    1 educator answer

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