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  • why do we need muscles and joints

    What is the purpose and structure of the skeleton? 1. Supports and protects the softer parts of the body (the very important organs! )P
    The brain is protected by the skull. The heart and lungs are protected by a strong rib cage. It is also protected by the breast bone (sternum) at the front and vertebral spinal column at the back. The spinal cord is protected by the vertebrae (bones of the spine). The intestines and reproductive organs are protected by the pelvis. 2. Supports our body through a framework of bones. Bones are not solid. The hard outer layer of the bone protects the light, porous (not solid) bone inside. This porous bone contains the marrow, which is the factory where red blood cells are produced a process called haematopoiesis. Red blood cells carry oxygen around the body, providing energy for our muscles. However, before we are born, all of our bones begin as a rubbery material called cartilage. As we grow, more and more deposits of calcium are laid down which change some of the cartilage into a more solid and rigid mass bone. act as an anchor for muscles which together, along with other soft tissues, make the body move. contain calcium and other minerals which make them hard (rigid) and provide strength. supply the body with calcium when the diet is calcium deficient. 3.


    why do poor children fail in school

    More than four-fifths of children from low-income families who have fallen behind by the age of seven will fail to achieve five good GCSEs including English and maths Б a glaring inequality that highlights the extent to which poor children's life chances are determined in primary school, a leading charity says. In a report looking at the most recent government figures, Save the Children argues that the ability to read, write and calculate at such a young age influences a child's future earnings and health, and in economic terms the problem costs the country billions in lost revenue. The charity is calling for the pupil premium Б primary school funding targeted at the poorest children Б to be tripled. By the time they are seven, nearly 80% of the difference in GCSE results between rich and poor children has already been determined. Save the Children says the first two years a child is at school are a crucial window during which to close the attainment gap Б but, despite SATs tests at age seven, most of the education system is geared towards assessing attainment at age 11 or the end of secondary school. If the trends seen between 2007 and 2012 continue, around half a million children risk not reading properly by the age of seven by 2020, the report said. The recession too will blight the poor's chances disproportionately. The charity found that the economic crisis had put extra pressure on parents' ability to support their children's learning with a quarter of all parents saying they had less money than they did five years ago, meaning they could not afford to pay for school trips and other activities. To right this imbalance the charity argues that the government should target the poor explicitly by raising the pupil premium from this year's бе900 per child to бе4,000 by 2020. More cash could be found by looking at the current split between primary and secondary schools.


    why do we need air to survive

    Just like us and other living creatures on the earth, plants also need air to survive. While we, the human beings, need air only to breathe in, the plants need it for making their food as well. During the day and night time, plants inhale oxygen for survival. They absorb oxygen through pores found on undersides of the leaves. The oxygen spreads into the live cells of plants and makes them breathe. Carbon dioxide also seeps out through these pores. Along with 24/7 Вrequirement of oxygen, plants also need carbon dioxide during the day for making their food. In the presence of sunlight, the chlorophyll in leaves makes food with the help of water in the soil and carbon dioxide in the air. This process is known as photosynthesis. For photosynthesis, plants also inhale carbon dioxide through the same pores. So, plants need air for two reasons в respiration and photosynthesis. In fact, plants are the natureвs greatest recycling agents.


    why do we celebrate labour day in australia

    Labour Day (or for you Yanks, Labor Day) is an Australian public holiday originally called Eight Hours Day. It celebrates the achievements of organised labour on behalf of the worker to bring about the 8-hour day in the late 1850s. Previously workers were required to work long hours each week. 10 to 12 hours a day six days a week. While a change was made to the hours worked each day, the five day work week we enjoy today took almost a century longer to be adopted finally in 1948. If look closely you may spot the numbers 888 on many union buildings across Australia. The numbers are in support of British socialist Robert Owen who believed that people should have 8 hours to work, 8 hours for recreation and 8 hours to sleep. This philosophy helped foster The Eight Hours Movement.


    why do we need to study business ethics

    A Good Citizen Organization Business ethics is not merely an extension of an individual's own personal ethics. Many people believe that if a company hires good people with strong ethical values, then it will be a ГвЕgood citizen organization. Professionals in any field, including business, must deal with individual's personal moral dilemmas because these issues affect everyones ability to function on the job. Normally, a business does not establish rules or policies on personal ethical issues such as sex, or the use of alcohol outside the workplace; indeed, in some cases, such policies would be illegal. Only when a person вs preferences or values influence his or her performance on the job do an individuals ethics play a major role in the evaluation of business decisions. Business is Different Many people who have limited business experience suddenly find themselves making decisions about product quality, advertising, pricing, sales techniques, hiring practices, and pollution control. The values they learned from family, religion, and school may not provide specific guidelines for these complex business decisions. In other words, a persons experiences and decisions at home, in school, and in the community may be quite different from his or her experiences and decisions at work. Many business ethics decisions are close calls. In addition, managerial responsibility for the conduct of others requires knowledge of ethics and compliance processes and systems.


    why do plants wilt on a hot summer day

    The complex structure of the plant gives the plant itself the ability to lose and gain water. The root hair cells which have the same ability as xylem, controls the loss and of water. The pressure called the root pressure which exists in the root hair cells exerted on the plant cell causes the plant to lose water by transpiration, the loss of water by evaporation. In a hot summer day, the stomata close to conserve water. The amount of water loss is influenced by factors which includes wind, light intensity, humidity and temperature. As the temperature and light intensity is higher on a hot day, the loss of water is increased. Plants with a thicker cellular structure and the tendency to store more water than other plants such as cactus have the ability to survive and minimize the effect of wilting.
    Plants mainly wilt during high temperatures because their transpiration rate exceeds the rate at which they can absorb water, says Virginia Tech horticulture professor Bonnie Appleton.


    why do people bully me for no reason

    In a recent Ditch the Label, we spoke to 8,850 people about bullying. We asked respondents to define bullying and then later asked if, based on their own definition, they had ever bullied anybody. 14% of our overall sample,Pso that s 1,239 people, said yes. What we then did was something that had never been done on this scale before; we asked them intimate questions about their lives, exploring things like stress and trauma, home lives, relationships and how they feel about themselves. In fact, we asked all 8,850 respondents the same questions and then compared the answers from those who had never bullied, those who had bullied at least once and those who bully others daily. This then gave us very strong and factual data to identify the real reasons why people bully others. It also scientifically proves that the reason people get bullied is never, contrary to popular belief, because of the unique characteristics of the person experiencing the bullying. Our data shows that those who bully are far more likely than average to have experienced a stressful or traumatic situation in the past 5 years. Examples include their parents/guardians splitting up, the death of a relative or the gaining of a little brother or sister. It makes sense because we all respond to stress in very different ways. Some of us use positive behaviours, such as meditation, exercise and talking therapy designed to relieve the stress. Others use negative behaviours such as bullying, violence and alcohol abuse, which temporarily mask the issues but usually make them worse in the long-term.


    why do transformers only work with ac current

    alternating current Also called 'AC'. This is an electric current that regularly changes its direction and size. supply. A transformer changes a high-voltage supply into a low-voltage one, or vice versa. A transformer that increases the voltage is called a step-up transformer. A transformer that decreases the voltage is called a step-down transformer. Step-down transformers are used in mains adapters and rechargers for mobile phones and CD players. direct current Also called 'DC'. This is electric current that flows in one direction only. supplies. A transformer consists of a pair of coils wound on an iron core.


    why do people go to santiago de compostela

    People for many different reasons: religious, adventurous, spiritual, for the outdoors or simply to do something special with their holidays
    ThePCamino can mean very different things to different people but there is one thing that binds all Camino pilgrims together: it is a very unique experience, a walking holiday like no other. ThesePare our 10 great reasons to walk the Camino de Santiago (feel free to share your own! if you have walked the Camino): 1. Simple pleasures Holidays are about taking a breather from every day life and the Camino takes that idea to another level: it is about getting back to basics and enjoying some of the most simple pleasures in life, like walking. It is also about savouring every step of the journey, not just the destination. No wonder so many people find it such a great soul-searchingPexercise, applying that philosophy to all aspects of their life after they finish their Camino. 2. Exercise Walking, walking and more walking. Not many holidays will get you back home in better shape! 3. Culture and History Along the Camino, you will pass cities, towns and villages of all sizes, with stunning churches, monuments and other cultural and historic landmarks.

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