World Demographic Development and Food Supply Essay

1.) The Neolithic and Industrial Revolutions

The two changes in the use of the earth's resources that had the greatest effect on the world population were

the neolithic and the industrial revolutions.

The neolithic revolution (a.k.a. agricultural revolution) was a change in the way of life of our ancestors. It

took place about 8000 years ago among various tribes in Asia and the Middle East. It included a transition

from foraging and hunting to the domestication of animals (most probably starting with the dog) and to

farming. Tribes settled in fertile areas and formed agricultural communities many of which grew into villages

and cities. This relatively stable way of life and the more reliable food supply (and surplus) led to the 

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How to change attributes of all folders/directory/files in dos

Few days ago, I connected my Flash Drive/ Pen Drive to my friend’s PC. My Pen Drive was infected by  virus.

This is a simple worm. It just make all your directory as system director and also make it hidden.(if you are using Microsoft windows as operating system).

So, I just First I deleted all those exe files and deleted recycled directory as well. This should remove your virus. But still you need remove the effect of virus. You need to update back the folder attributes.

You can do it by single line command:

[your drive letter]:/>attrib –s –h –r /s /d

F:/>attrib -s -h /s /d

MozBackup

As great as it is to have tools such as Firefox and Thunderbird, backing them up can be a tedious process. MozBackup is a tiny program that makes saving and restoring all your bookmarks, extensions, and other personal settings a streamlined and stress-free experience.

The program works with Firefox, Thunderbird, SeaMonkey, and Netscape on Windows platforms. It doesn't work with Firefox Portable, Sunbird, Songbird, or Flock, but for standard Windows iterations of the programs in the Mozilla suite, it's almost silly to not use this program.

Close the program you want to back up, then run MozBackup. Choose backup or restore, then the application. Select the program profile and the location to save the backup, and whether you want to password protect the file. Lastly, choose which parts of the profile you want to save or restore, which range from from e-mails and address books to extensions and history, from certificates, and passwords to bookmarks and your cache.

To back up Netscape, choose the Mozilla Suite option.

Restoring a profile works the same way, but what makes the app extremely useful is that it doesn't differentiate from a restore and a clean install. So if you've got a specific or complicated set of extensions and settings on your work machine, and merely thinking about how to transfer them makes you want to revert to using an Underwood, MozBackup should quell your fears.

PDF Password Remover is a freeware tool

A while back, we shared some nifty utilities to Remove PDF Security Restrictions, Password Protect PDF and Remove Password from PDF Files. Another similar free app, PDF Password Remover is recently launched for Windows that aims to quickly wipe out all the restrictions of a PDF file, without requiring the owner password. Thus, to let users decrypt the PDF and remove the printing, copying text and editing protection.

PDF Password Remover is a freeware tool to remove PDF restriction from protected PDF files. It is very easy to use, offers drag and drop functionality and it even supports batch conversion to decrypt multiple PDFs at once. One can easily remove the owner password from any PDF document just by dragging the file(s), the tool will then instantly and automatically export the un-protected file to the output directory, and the output folder opens up itself in the explorer. You can also specify the desired output path.

 

This is one of the simplest and fastest application to remove restrictions from PDF(s). Moreover, a portable version of it is also available. However, it should be noted that PDF Password Remover cannot remove the user password, i.e. you cant remove the PDF password and restriction if there is a user password set.

Download PDF Password Remover

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