Homework Help

We’ve answered 330,708 questions. We can answer yours, too.

Ask Your Question
Browse Questions
  • Speech
    If this is a persuasive speech, any of the hot-button political issues would probably do the trick:-- Gay Marriage: Right or Wrong?-- Gun Control: Good or Bad?-- The Death Penalty: Use it or...

    Asked by hima-20 on via web

    11 educator answers.

  • Science
    The most common utensils and appliances that you need while performing hands on activities in a laboratory. The laboratory apparatus depends upon the type of laboratory you are in and the...

    Asked by user5175807 on via web

  • Solar System
    Our data has improved considerably in the last 20 years. Mercury: no moons Venus: no moons Earth: 1 moon Mars: 2 moons, Phobos, Deimos Jupiter: 67 moons, some of which do not yet have proper...

    Asked by enotes on via web

    1 educator answer.

  • Chemistry
    A compound is a chemical combination of two or more elements in definite proportions. For example, two hydrogen molecules + one oxygen molecule= one water molecule. A solution is a physical...

    Asked by cm16 on via web

    4 educator answers.

  • Science
    Solute and solvent are the two components of a solution. A solvent is a substance that dissolves the solute. And the solute is the substance being dissolved. To identify them, take note that if the...

    Asked by anum30140a on via iOS

    1 educator answer.

  • Science
    A rainbow is made by the reflection and refraction of light that interacts with raindrops. Depending on how this interaction occurs with your location relative to the sun and the raindrops you may...

    Asked by enotes on via web

    7 educator answers.

  • Science
    While the functions and applications of a computer are almost endless, we can sense four primary purposes that are all linked to data (information): Entering data, manipulating data, viewing...

    Asked by malfoyxx321 on via web

    1 educator answer.

  • Science
    The short answer is that velocity is the speed with a direction, while speed does not have a direction. Speed is a scalar quantity -- it is the magnitude of the velocity. Speed is measured in units...

    Asked by azzyj on via web

    2 educator answers.

  • Science
    Renewable energy sources are ones which don't run out - which can be renewed. We can keep using them and using them, and we'll never run out. Examples of renewable sources include wind, water power...

    Asked by fjnfkbjnkgjdf on via web

    1 educator answer.

  • Science
    Differences: - DNA is double-stranded, RNA is single-stranded. - DNA contains a pentose sugar Deoxyribose, RNA contains the pentose sugar Ribose. A pentose is a 5-carbon sugar molecule. - DNA is...

    Asked by bubbles13 on via web

    2 educator answers.

  • Science
    There are several observations that we can identify some chemical reaction have taken place with in a system. Change in temperature-usually when a reaction takes place heat will be absorbed or...

    Asked by connorcolin3 on via web

    1 educator answer.

  • Science
    Helpful bacteria: E. Coli are found in the intestines of humans and aid in digestion. Streptomyces is used in making antibiotics. Rhizobium are helpful bacteria found in the soil. They convert...

    Asked by cakeyum3838 on via web

    1 educator answer.

  • Science
    Not many, newborn infants have more cartilage than bone at birth. This is why newborns are so limber, cartilage is more pliable than bone. Bones form and develop over time by a process called...

    Asked by victorsnanny on via web

    1 educator answer.

  • Biochemistry
    This question deserves several "answers" aimed at different levels.For elementary-school students, it is important to know that photosynthesis is how green plant cells trap sunlight to...

    Asked by Scott Locklear on via web

    2 educator answers.

  • Chemistry
    Compounds are substances that can be broken down through various chemical processes into elements. Elements are substances that cannot be broken down any further; all the atoms of an element are...

    Asked by oliviastabley on via web

    3 educator answers.

  • Science
    The cell theory was arrived at after much study of living cells due to the intellectual contributions of Matthias Schleiden who noted all plants contains cells, and in 1838 added that different...

    Asked by mgoun on via web

    2 educator answers.

  • Physics
    The formula for pressure is P = F/A In this equation, P stands for pressure while F stands for force and A stands for area. Pressure is typically measured in a unit called the Pascal. So what this...

    Asked by ustaad on via web

    1 educator answer.

  • Science
    Reptiles are cold-blooded animals. They typically lay hard shelled eggs and have skin covered with scales or a bony external plate. They either have four legs or descended from four limber...

    Asked by topher01 on via web

    1 educator answer.

  • Science
    An earthquake is a disaster that is not preventable and they are beyond the control of man. There are different types of earthquakes such as tectonic earthquakes and volcanic earthquakes. Tectonic...

    Asked by tanya-gupta on via web

    4 educator answers.

  • Science
    Breathing is a necessary function for human beings. It supplies oxygen for a process called cellular respiration, which is how cells manufacture the energy they need for their life functions....

    Asked by ofomfli on via web

    1 educator answer.

  • Biology
    The male reproductive system in man consists of primary sex organs,the testes,and a set of accessory sexual structures.Each of two testes in the adult male is an ovoid body.Both are located outside...

    Asked by happyboy on via web

  • Science
    Research may be very broadly defined as systematic gathering of data and information and its analysis for advancement of knowledge in any subject. research attempts to find answer intellectual and...

    Asked by yogesh779 on via web

  • Science
    There are several differences between monocots and dicots, here are three big ones. The main one (that gave rise to the names) is that monocots have seeds that are one piece (like corn), while...

    Asked by kalaun on via web

    2 educator answers.

  • Science
    Sampling is a method of studying from a few selected items,instead of the entire big number of units. The small selection is called sample. The large number of items of units of particular...

    Asked by kunal456 on via web

  • Science
    Polar and non-polar molecules A molecule is classified as a polar moleculewhen the arrangement of the atoms is such that one end of the molecule has a positive electrical charge and the other end...

    Asked by soccergirl21 on via iOS

    1 educator answer.

  • Earth Science
    Fossils are formed when the body of a living organism that has died is covered and protected from decay by microorganisms and attacks by predators. Usually fossils are formed when a layer of...

    Asked by gahs14 on via web

    2 educator answers.

  • Chemistry
    There exists several characteristics that make the difference between a mixture and a compound. A mixture can contain components in any proportions while a compound contains components in fixed...

    Asked by essesy on via web

    2 educator answers.

  • Science
    Air enters the nostils. It is moistened by mucus, warmed up to body temperature and dust is filtered out of the air, by hairs and trapped by mucus. It passes to the nasopharynx, to the oral...

    Asked by divyakholwad02 on via web

    1 educator answer.

  • Science
    The number of muscles in our body varies from around 640 to 850. We have 3 types of muscles in our body: skeletal, visceral, and cardiac. The skeletal muscles are voluntary, while the visceral...

    Asked by enotes on via web

  • Science
    I have to correct the first answerer--the "normal" number of 46 chromosomes is the DIPLOID number, not the haploid. In egg and sperm cells, half the number is present, and this is known as the...

    Asked by enotes on via web

    6 educator answers.

  • Science
    The main purpose of hemoglobin is to bind the oxygen. When there is not a lot of some of the symptoms experience resemble that of lack of oxygen. The symptoms of low hemoglobin depend on the...

    Asked by marcatos923 on via web

    3 educator answers.

  • Biology
    The depends on how you define "in." Most stories about spiders laying eggs under human skin, or in the muscular tissue, are urban myths. They aren't supported by evidence, and mostly show...

    Asked by blueeyes1335 on via web

    1 educator answer.

  • Environmentalism
    There are a number of ways in which we can do this. Some of the best ways to do this are captured in the slogan “reduce, reuse, recycle.” We can reduce the amount of resources that we use on...

    Asked by mimi101 on via web

    7 educator answers.

  • Biology
    The cell cycle of a somatic cell consists of interphase and mitosis/cytokinesis. During interphase, which occurs prior to mitosis, there are 3 phases: G1, S, and G2. During the G phases the cell...

    Asked by dgault11 on via web

    1 educator answer.

  • Science
    The four spheres show how the four main components of Planet Earth form a complete system. These main components are land, air, water, and life. The lithosphere, also known as Geosphere is made of...

    Asked by jarmel on via web

    1 educator answer.

  • Physics
    In a house, there are many electrical appliances that have to run independent of each other. If one appliance is turned on or off it should not affect the other appliances. This is not possible if...

    Asked by kylekasman on via web

    1 educator answer.

  • Science
    The major disadvantages of industrialization fall into two categories: social and environmental. Environmentally, industrialization both pollutes the environment and depletes its resources....

    Asked by rohangupta on via web

    5 educator answers.

  • Science
    The physical change occurs when the heat displaces the bonds that solidify the wax. Upon cooling, the wax is able to form the bond again. The chemical changes are much more complex. The first...

    Asked by dematha on via web

    2 educator answers.

  • Geology
    There are generally two versions of the answer to this question. The first is the more general about 70% of Earth is water while about 30% is land (US Geological Society). The second is the more...

    Asked by smallys-army on via web

    2 educator answers.

  • Science
    During the daytime plants need light to live, in order to be able to produce sugars and carbohydrates as well as oxygen. However at night they can't produce these. In order to survive this period...

    Asked by alpha-03 on via web

    1 educator answer.

  • Science
    The ear has three part: the outer ear, the middle ear, and the inner ear. The inner ear is the part of the ear that is responsible for balance (and hearing as well). The inner ear has what is...

    Asked by d-mesh on via web

    1 educator answer.

  • Science
    Endothermic reactions need activation energy to proceed. Therefore, heat energy is needed for an endothermic reaction to occur. The prefix endo- means within, therefore energy must be absorbed for...

    Asked by kano on via web

    2 educator answers.

  • Biology
    The mitochondria are organelles within an animal cell that provide energy for the rest of the cell's functions through the creation of the energy molecule ATP by the chemical reactions occuring in...

    Asked by meloshi on via web

    1 educator answer.

  • Science
    The advantages of non-renewable energy are found in two areas: cost and availability. Most of the energy-consuming products that run off of non-renewable energy sources have very little real...

    Asked by birch123 on via web

    3 educator answers.

  • Science
    Any object will accellerate due to gravity -9.81 m/s^2. By integrating this acceleration over time, one obtains the velocity at any time t. v = gt + v0. In this case, the ball started at rest, so...

    Asked by papertee on via web

    1 educator answer.

  • Science
    The main difference between a community and an ecosystem is that the ecosystem is defined as the result of what happens when a community of living organisms shares and interacts within their...

    Asked by muntaha123 on via web

    1 educator answer.

  • Science
    Determining how much blood is in the average human body depends on how much a person weighs. A man weighing 154 pounds (69.8 kilograms) would have about 5.5 quarts of blood. A woman weighing 110...

    Asked by enotes on via web

    1 educator answer.

  • Biology
    The three systems interrelate for a complete function of the body. The respiratory and cardiovascular systems work together to perform the gas exchange function. Without gas exchange function, the...

    Asked by user100400 on via web

  • Physics
    Most of the time, people ask this question with the idea of a Newtonian "feather vs. bowling ball" concept in mind. Based on those terms, the typical answer is correct: two objects will fall at the...

    Asked by himanshu9 on via web

    3 educator answers.

  • Science
    Ice floats on water because density of ice is less than water. In common language we can say ice floats on water because it is lighter than water. Any solid when place in a liquid buoyancy force...

    Asked by sili on via web

Showing 1–50 of 25,238