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  • Science
    Fermented foods have an extended shelf life. Pickling was done traditionally to keep excess crops from spoiling and to preserve them during the long winter months. Pickles, sauerkraut, even certain...

    Asked by enotes on via web

    1 educator answer.

  • Science
    When the earth experiences the Spring or Autumnal Equinox, the sun is exactly above the equator. This means that the two hemispheres receive equal light, for example. If the South Pole is at a 90...

    Asked by alinatiana on via web

    1 educator answer.

  • Science
    I do not think magnesium tablets can be used as an electrode in a lemon battery. Magnesium tablets, like other other supplements, contain magnesium in the form of magnesium salts, magnesium acid...

    Asked by nathanaji on via web

    1 educator answer.

  • Science
    A process that can change the size and shape of mountain ranges is weathering and erosion. Once among the tallest peaks in the world, the Blue Ridge Mountains of Virginia have been weathered and...

    Asked by user5579276 on via web

    1 educator answer.

  • Science
    A mutation can arise from a change in the DNA sequence. If a mutation occurs in a germ cell, the mutation can be passed along to the next generation. Some mutations are harmful, some have no effect...

    Asked by user9700736 on via web

    1 educator answer.

  • Science
    I will start with the independent variable. The independent variable in an experiment is the variable the experimenter has control over. For example, if you are testing the effect of amounts of...

    Asked by lexibrown on via web

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  • Science
    A teacher will be expected to deal with students in their early years, when they are beginning to develop who they are and what they stand for. In youth, people can often have very different ways...

    Asked by albertndege on via web

    1 educator answer.

  • Science
    The impacts of poison in the kitchen and garden are more focused toward women, at least in the home setting. Silent Spring was published in 1962, when women usually worked in kitchens, gardens, and...

    Asked by mcostine62 on via web

    1 educator answer.

  • Science
    Evolution is a difficult concept to cover because it is contrary to popular religious teachings. Evolution itself is a rather simple thing to teach. All living things have a common ancestor....

    Asked by user2429479 on via web

    1 educator answer.

  • Science
    The cell is the largest in this group, as a single cell is able to hold many, many times what the other items on the list contain. Cells can be seen even without a microscope at times, like some...

    Asked by choongjeff1 on via web

    1 educator answer.

  • Science
    The guiding principle for determining valency is the Octet Rule. This states that all atoms will prefer to have a full valency shell. In practice, this doesn't always mean there must be eight...

    Asked by kushradadiam on via web

    1 educator answer.

  • Science
    Magnesium burns in the presence of many gasses, carbon dioxide being just one of them. You are correct that the carbon dioxide splits into it's primary components of carbon and oxygen. This type of...

    Asked by adityagill2002 on via web

    1 educator answer.

  • Science
    There are at least three forces that have an attractive aspect to them: the strong force, the electromagnetic force, and gravity. All three of these involve particles with mass, so all three meet...

    Asked by user5643742 on via web

    1 educator answer.

  • Science
    There's nothing that will provide both high traction and low friction under all circumstances, as the definition of traction incorporates friction and depends on it in order to function. We also...

    Asked by user5200489 on via web

    1 educator answer.

  • Science
    Psychology has long highlighted the strong impact of environment on the behavioral response of people, especially children. Babies are heavily dependent on their parents or caretakers. Thus, their...

    Asked by darnamina on via web

    1 educator answer.

  • Science
    Glycerol, a common coolant fluid, is used to determine melting point because unlike water, glycerol has a very high boiling point. Water will boil off at 100 degrees Celsius in standard pressure,...

    Asked by pandacute on via web

    1 educator answer.

  • Science
    Without knowing more about your instructor's purpose for asking this, I have to assume that it's a bit of a trick question. Mesosomes are, by general consensus, not considered to be inherent...

    Asked by user8088920 on via web

    1 educator answer.

  • Science
    While petrol and diesel are two of the most commonly used fuels to power vehicles, there are actually a wide variety of fuels that have been used in the past and present. The following is a...

    Asked by ltpoly99 on via web

    1 educator answer.

  • Science
    Hello! Theoretically, the answer is no, you cannot see such an object in water. It would be no refraction of light between such plastic and water. Refraction occurs when an inclined ray approaches...

    Asked by evajones1999 on via web

    1 educator answer.

  • Science
    The reason that mass is not lost when matter changes state is because of the law of conservation of mass. This particular law says that for any closed system, the mass of the system must remain...

    Asked by vasavipamidi0994 on via web

    1 educator answer.

  • Science
    Male hormones are known as androgens. A very important one is called testosterone. Males have a pair of sex chromosomes known as XY. The sex of a male is determined at fertilization when a sperm...

    Asked by enotes on via web

    1 educator answer.

  • Science
    Hello! Kinetic energy is that part of full energy which a body has due to its motion. The formula for kinetic energy is `E_k = (m V^2)/2,` where `m` is the mass and `V` is the speed (regardless of...

    Asked by rashikshrestha75 on via web

    1 educator answer.

  • Science
    Linear yield questions like this are really just compounding fractions. I like to think of it this way. Lets say you have a recipe for fruit salad, and it calls for cored apples. When you make the...

    Asked by leexiao on via web

    1 educator answer.

  • Science
    Human beings and plants absorb and expel different gasses from their systems as needed. In human beings, oxygen is important for the functioning of the cells. Oxygen is the fuel our body cells use...

    Asked by tbharathkumar036 on via web

    1 educator answer.

  • Science
    Your question could be broken down into two categories: physical versus chemical properties, and intensive versus extensive properties. Physical properties of matter have to do with features that...

    Asked by jerogsagun on via web

    1 educator answer.

  • Science
    It really depends on the kind of smoke more than anything. Cigarette smoke is a hazard due to things mixed into the tobacco, like tar and other chemicals. Because it is often inhaled directly, and...

    Asked by parthkhilnani on via web

    1 educator answer.

  • Science
    Blood can be referred to as a red river of life. Both blood and a river are liquid. In an organism, blood flows throughout the body transporting nutrients, oxygen and carrying away wastes. It is a...

    Asked by user3148031 on via web

    1 educator answer.

  • Science
    Hello! The answer is increases. Now let's figure out why. Ohm's law states that the current through a conductor is directly proportional to the voltage, or, in other words, that the voltage drop...

    Asked by madduezrasastry on via web

    1 educator answer.

  • Science
    Old fashioned windmills were used for grinding things like flour and grain, so they were essentially a giant stone that was spun by the wind, sitting on a giant stone that could turn freely. As the...

    Asked by alk0001 on via web

    1 educator answer.

  • Science
    Coal originates from dead plant material. Plants photosynthesize by use of light energy to produce glucose they use as a food source. When these plants die, the decay process is sometimes stopped...

    Asked by apoorve46 on via web

    1 educator answer.

  • Science
    Hello! The molar mass of `C H Br_3` (bromoform) is about `12 + 1 + 3*80 = 253 (g/(mol)).` Therefore one mole of this substance has a mass of about `253 g.` One mole of any substance contains `N_A...

    Asked by mahrukhhira on via web

    1 educator answer.

  • Science
    This depends on the conditions of the environment in which the objects are found. For example, the objects can be physically touching each other, they can be separated by a medium (a liquid or...

    Asked by user6998161 on via web

    1 educator answer.

  • Science
    A "detailed protocol" is really just a fancy way of saying "the instructions". We just use this vocabulary to indicate the subtle but importance between following instructions like you would follow...

    Asked by user9163590 on via web

    1 educator answer.

  • Science
    The primary taste in a coffee or tea is tannin. Tannin is an acid found in many parts of trees and other plants, which has a strong, bitter flavor. While it is an acid, many acids have different...

    Asked by user1451205 on via web

    1 educator answer.

  • Science
    When water condenses on a surface, it is commonly referred to as dew or condensate. When you leave a car outside, there is moisture in the air inside the vehicle. This air tends to be around 70...

    Asked by cydiaking on via web

    1 educator answer.

  • Science
    When you say a poor conductor but not an insulator, I assume you mean something on the border between insulator and conductor. Even an insulator is considered a conductor if electricity can pass...

    Asked by maisiejane30 on via web

    1 educator answer.

  • Science
    A macromolecule is simply a molecule that contains a number of atoms on par with the thousands. While a chemistry based definition would consider the macromolecule to be only parts held together by...

    Asked by wasigold on via web

    1 educator answer.

  • Science
    "Dominant" is a highly generalized term that we use to describe the relationship of a particular allele to another. Dominant alleles will be more visible in the phenotype of the organism. In...

    Asked by zyramongado on via web

    1 educator answer.

  • Science
    Matter expands in response to temperature due to an increase in kinetic energy—vibration—of molecules/ atoms. Gases expand the most, followed by liquids, then solids. Expansion, more...

    Asked by user8704078 on via web

    1 educator answer.

  • Science
    This equation seems completely balanced to me. Let's figure out if this is true. For an equation to be a balanced one, the quantity of atoms of each type must be the same on the left side and on...

    Asked by anjipops on via web

    1 educator answer.

  • Science
    Hello! Newton's Second law will help us. It states that the (vector) sum of all forces acting on a body is the same as its mass multiplied by its acceleration, `vecF = m veca.` There are four...

    Asked by user2401614 on via web

    1 educator answer.

  • Science
    An incandescent light is a more technical term for traditional light bulbs, which produce light via incandescence. This is the term for the light emitted by objects when they're heated, in the same...

    Asked by moniquegothico on via web

    1 educator answer.

  • Science
    By considering the information given and the relationships between phenotype and genotype, we can definitely conclude with the initial information: B = brown, dominant b = white, recessive...

    Asked by sschollenberger6 on via web

    1 educator answer.

  • Science
    Without looking at specific samples of rocks and comparing them, we can rely on a few general rules for dating rocks. The Law of Superposition says rocks on the bottom of a sequence (a vertical...

    Asked by cloweyfreestone on via web

    1 educator answer.

  • Science
    Animals, such as fish, amphibians, mammals, and insects have a variety of adaptations that let them exist in swift moving water. Fast moving water tends to be colder than slow water; some of it...

    Asked by cerila1110 on via web

    1 educator answer.

  • Science
    Ammonia and ammonium differ by one hydrogen ion (H+). Ammonia is the common name for the compound nitrogen trihydride, which has the formula `NH_3` . Ammonium is the name of the ion `NH_4^+` . An...

    Asked by damodarramdoyal on via web

    1 educator answer.

  • Science
    The most important thing about non renewable resources for developing countries is ease of use and cheap availability. To use the energy in a fossil fuel, often times all that is required is fire....

    Asked by manthrascientist1999 on via web

    1 educator answer.

  • Science
    Mitochondria don't really have a fixed shape, and so it would be imprecise to call them "circular." Furthermore, circles are two-dimensional shapes, like you would draw on a piece of paper, and...

    Asked by nischalbhandari57 on via web

    1 educator answer.

  • Science
    Carl Linnaeus (May 23, 1707 - January 10, 1778), or Carolus Linnaeus in a Latin rendering, was a Swedish man who is well regarded as one of the founders of modern ecology and taxonomy. His work was...

    Asked by alkiratdane on via web

    1 educator answer.

  • Science
    This looks like the reaction used to determine, or abstract, halides. Silver nitrate is used to abstract halides and determine what the halogen atom is in the ethyl molecule. The reaction is often...

    Asked by user7823727 on via web

    1 educator answer.

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