INPUT ARTICLE: Article: Select "App Store" from the Apple menu in the top left corner of your screen and check for software updates. Keeping your software up to date helps keep your laptop running fast. Click on the Apple menu in the top left corner of your screen and select "System Preferences". Select "Users and Groups" followed by "Login Items". Check the box next to the each program you no longer want to open automatically at startup and then click "-" to delete the items from the list. Preventing programs and apps from opening automatically at startup is another great way to increase your laptop's speed. Your laptop runs a variety of programs in the background. These background processes can monopolize your laptop's memory, causing it to run slowly. Ending the background processes will improve the speed of your laptop. Open the "Applications" folder, then launch "Utilities". Open "Activity Monitor", click on the "Memory" tab, then the "Memory" filter. Double-click on a program you want to quit and then click "Quit". To end the program, click "Quit" again. Only close programs that you are familiar with. The memory filter will sort the programs by the amount of memory they are using. The program using the most memory will appear at the top of the list. Visual effects, such as the way your laptop minimizes windows, can also slow down your laptop. To turn these off, click on the Apple menu in the top left corner of your screen and select "System Preferences". Select "Dock". Change the "Minimize windows using" preference from "Genie effect" to "Scale effect". Return to "System Preferences" main menu and open "Accessibility". Check the box next to "Reduce transparency". This will decrease the transparency of drop-down menus, the dock, etc.

SUMMARY: Click the Apple menu to check for software updates. Limit the number of programs that open automatically under "System Preferences". End unnecessary background processes with the "Activity Monitor". Disable your laptop's visual effects through the "System Preferences".

In one sentence, describe what the following article is about: To drain the tank, switch off the water. You can find the valve near the wall behind your toilet. Once the water is switched off, flush your toilet. This should drain all the water from the tank. Look at how dirty your tank is. If it seems relatively clean, all you need is a basic disinfectant. You can use the same spray you normally use in your bathroom. However, with built up debris, you need something stronger. If you notice hardened mineral deposits in the tank, opt for white vinegar. If there is a lot of gunk and mildew built up in the tank, clean it with bleach over a commercial cleaner. With bleach and commercial cleaners, you can spray or pour the cleaners into the tank. Target the bottom and sides of the tank, paying particular attention to areas with built up dirt. Make sure to wear gloves when handling bleach. When dealing with mineral deposits, the process is slightly different. Pour white vinegar into the tank, up to the top of the overflow tube. Let the vinegar sit for 12 hours before flushing the toilet. After 12 hours have passed, flush the toilet and proceed with regular cleaning.
Summary: Drain the tank. Determine the proper type of cleaner. Apply your cleaner accordingly. Let vinegar sit to treat mineral deposits.

While you are treating your dry scalp from the outside with conditioner or oils, it's just as important to treat it from within, too. Staying hydrated by drinking enough water to keep your skin healthy and hydrated. Try to drink at least eight 8-oz glasses of water daily. Vitamin deficiencies may be causing your dry scalp. Make sure you are eating a well-balanced diet and getting plenty of vitamin B (especially B6 and B12) from fruits, vegetables, and whole grains. Omega-3 fatty acids are also important in supporting a healthy, hydrated scalp. Omega-3s are found in fatty fish, nuts and seeds, and oils. You can supplement vitamin B with flaxseed oil, zinc, or selenium and take fish oil supplements to increase Omega-3s. Always talk to your doctor or pharmacist before beginning a new supplement. Sometimes, a dry, itchy scalp is caused by something you're allergic to in your shampoo or other hair products. To test the theory, try picking hair products that are free of dyes and scents to see if that helps keep you from getting a dry scalp. You could also buy products that are hypoallergenic if you have sensitive skin. Chlorine is known to dry out skin and hair. If you spend a lot of time in the pool, that could lead to a dry scalp. Fortunately, you don't need to skip swimming altogether; you just need to protect yourself. Rub a conditioning cream into your scalp and hair, and then tuck your hair up into a swimming cap before you go swimming. You might also consider purchasing a shower filter. These will filter out chlorine along with other chemicals that might be in the water. Hot water can be harsh on your skin, scalp, and hair, drying it out. To keep your scalp from drying out too much, turn the heat down when you get in the shower. Try warm showers instead of hot, and stay out of the hot tub. Whether it's winter or summer, weather can wreak havoc on your scalp and hair. In the winter, put a hat on to protect your head from the dry, cold air. In the summer, use sprays that have sunscreen in them to protect your scalp, particularly if you're going to be out in the sun. If you live in a particularly dry or cold climate, the inside of your house likely gets dry during certain parts of the year. Dry air dries out your skin, scalp, and hair, making it harder to control things like dry scalp. One way to remedy the situation is to run a humidifier in your house to increase the humidity in the air. Try running one in your bedroom, for instance.
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One-sentence summary -- Stay hydrated. Eat hair-healthy foods. Skip dyes and perfumes. Avoid chlorine. Stay out of hot water. Protect your scalp from the weather. Run a humidifier.

INPUT ARTICLE: Article: There are several missions available when you play a CoD Ghosts' campaign. However, you don't need to complete all those missions to unlock Extinction mode. All you have to do is to complete the first four missions. The missions that you need to complete are namely Ghost Stories, Brave New World, No Man's Land, and Struck Down. You have to complete these missions on regular difficulty (or higher) to unlock Extinction mode. After completion, you just have to go back to the main menu and you will find that Extinction mode is already available.

SUMMARY:
Complete the first four missions. Go back to the Menu.