File format
Images can be saved in a variety of file formats. Different file formats exist because some are better at certain tasks than others. Some file formats are associated with specific software programs. For example, Adobe Photoshop's file format is .PSD.
However, graphics packages also allow the user to save their work in compatible file formats that can be used in a variety of software programs - eg .JPG, .GIF, .TIFF. Most digital cameras automatically save photographs as .JPG and these can be used in a variety of graphics packages.
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Answer the following questions. You can get the information you need through this link:
http://www.bbc.co.uk/schools/gcsebitesize/dida/graphics/selectingrev7.shtml
1.- What are the main characteristics of the three formats: JPG, GIF, BMP?
2.- What are they used for?
3.- Compare the three formats.
4.- Which has a bigger size?
viernes, 16 de octubre de 2009
martes, 6 de octubre de 2009
Should the morning-after pill be banned?
CONS
Emergency contraceptive pills can have serious, harmful side-effects including nausea, vomiting, infertility, breast tenderness, ectopic pregnancy and blood clot formation. Nobody knows the long-term effects.
Emergency contraception is a form of abortion. It works by preventing a fertilised egg and a fertilised egg is a human being, because it contains within itself all that is necessary for a child to develop. Therefore it could be considered as murder.
Emergency contraceptive pills can have serious, harmful side-effects including nausea, vomiting, infertility, breast tenderness, ectopic pregnancy and blood clot formation. Nobody knows the long-term effects.
Emergency contraception is a form of abortion. It works by preventing a fertilised egg and a fertilised egg is a human being, because it contains within itself all that is necessary for a child to develop. Therefore it could be considered as murder.
Should the morning-after pill be banned?
PROS
Whether intentionally or not, people do sometimes have unprotected sex without wanting to get pregnant. When this happens, emergency contraception allows women to ensure that they are not pregnant, without the stress and increased health risk caused by waiting until a pregnancy can be confirmed and then, if desired, having an abortion.
There are good reasons for making the morning-after pill a non-prescription drug. It can take time to get a prescription from a doctor, and in speed is very important in an emergency. Some patients may be embarrassed to tell their doctor about what they need, and so will not go to get a prescription.
Whether intentionally or not, people do sometimes have unprotected sex without wanting to get pregnant. When this happens, emergency contraception allows women to ensure that they are not pregnant, without the stress and increased health risk caused by waiting until a pregnancy can be confirmed and then, if desired, having an abortion.
There are good reasons for making the morning-after pill a non-prescription drug. It can take time to get a prescription from a doctor, and in speed is very important in an emergency. Some patients may be embarrassed to tell their doctor about what they need, and so will not go to get a prescription.
Should the morning-after pill be banned?
CONTEXT
Emergency contraception, often called the ‘morning-after pill’, reduces the chance of pregnancy following unprotected sexual intercourse. if taken within 72 hours they reduce the risk of pregnancy by between 75 and 89 percent. Emergency contraceptives such as Levonelle are legal in the US and UK; in the UK they can be bought over the counter from pharmacists by over-16s.
Emergency contraception, often called the ‘morning-after pill’, reduces the chance of pregnancy following unprotected sexual intercourse. if taken within 72 hours they reduce the risk of pregnancy by between 75 and 89 percent. Emergency contraceptives such as Levonelle are legal in the US and UK; in the UK they can be bought over the counter from pharmacists by over-16s.
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