Problem: Article: A period is a standard sign of puberty. There are ways of telling if your period is coming. One way of telling if your period is near is vaginal discharge. Discharge is a yellow/white substance that appears in your underwear. Once you get your discharge, your period could come within 6 months to up to 2 years time. Some girls choose to wear a pantyliner to protect their underwear from discharge. You can expect your period about two years after you get breast buds. Just after your breasts start to form, you'll probably start growing pubic hair (hair on and around your private regions).It will be soft and thin at first, but it’ll get coarser over time. Your period usually arrives around one to two years after public hair growth.
Summary: Be aware that you can get your period anytime between ages 9 to 16. Know the signs. Note that your breasts will start to grow. Expect to see pubic hair grow.

Problem: Article: Exercising your whole body to lose weight will eventually reduce fat in the facial area, too. In fact, it's very difficult to lose weight in just your face, and that's often the last place to thin out. Starting a steady exercise routine with cardio and strength training can put you on the path toward a thinner face.  Running, swimming, and biking are all great cardio activities. Plan to do one of these activities for at least 1/2 hour 4 times a week. Go to the gym and meet with a personal trainer to get acquainted with a strength training routine. Learn how to lift weights to work out all of your muscle groups. This reduces the amount of fat you store in your body and your face. Satisfy your hunger with fruits, salad and low calorie food items. If you are really serious about getting rid of your double chin, losing weight can definitely help.  Don't try anything restrictive or faddish.  Your change must be one that you can carry on for the rest of your life.  Small, consistent losses are what you should be aiming for and maintaining. Your diet should include plenty of fiber, fruits, vegetables and water.  See a nutritionist, dietician or doctor for advice and encouragement.
Summary: Do general exercise. Limit your calorie intake.

Problem: Article: Use a 2 quart (2 liter) plastic bottle and fill it ¾ of the way with water. You can either use water from a local pond or stream, or from the tap. Pond or stream water is preferable because you will also get small microorganisms that may be present in the water. If you have to use tap water, make sure that you let it sit in an open container for at least 24 hours before using in your ecosystem. The chlorine present in tap water may kill any animal or plant species that you add to your ecosystem. Letting the water sit for 24 hours gives the chlorine time to dissipate from the water. Next, add 1-2 inches (2.5-5 cm) of tiny rocks or pebbles. You should always wash any rocks prior to adding them to your ecosystem. This will help remove any contaminants. At this stage you could also add one dead leaf. This will provide a food source for any microorganisms in the water. You can buy aquatic plants from your local pet supply store. When you add the plants to your ecosystem, make sure to separate them and add them individually. Alternatively, you could pick water plants from a local pond. You can also purchase small freshwater snails at your local pet supply store. Alternatively, you may be able to find water snails from a local pond. Make sure the snails are small enough to fit through the opening of the bottle. Once you have placed everything into your ecosystem, you should wait approximately 24 hours before sealing it closed. This will allow your ecosystem to settle. After 24 hours you can screw the cap onto the top of the bottle. Situate your aquatic ecosystem in a sunny spot. The bottle should receive indirect sunlight throughout the day.
Summary: Fill the bottle ¾ of the way with water. Add pebbles. Insert aquatic plants. Place snails in the bottle. Wait 24 hours before putting the lid onto the ecosystem. Place the ecosystem in a sunny spot.

Problem: Article: The smell of gas is one of the best indications that you haven't successfully fixed a gas leak. While you might not always be able to smell a leak, you should pay attention to see if you do notice the smell of leaking gas.  Gas smells like Sulphur or “rotten eggs.” The smell of gas is made by mercaptan, an additive that is intended to help humans smell it. Shut off the master gas switch for your home and consider calling a professional if you smell gas. The gas main switch will be located next to your meter -- usually on the side of your home. Carbon monoxide detectors and gas detectors are normally used to alert people to gas leaks in their homes and businesses. While most detectors are stationary devices meant to detect an accumulation of carbon monoxide or other fumes, you can purchase portable detectors.  Position your stationary carbon monoxide detector near the repair you've made. If you have a portable detector, move it near (within several inches) to the repair. If there is a gas buildup near the detector, it will sound an alarm. This works because the detector solution or soapy water will bubble due to the force of the leaking gas. Ultimately, this is a simple and effective way to find out if you've successfully fixed a gas leak.  Commercially produced gas leak detector is specially formulated to stick to tight connections. If you want to create your own solution, try mixing a few drops of dish soap into a cup of water and spraying it onto the gas connection. If the solution bubbles, you likely failed to repair the leak. Gas detector may be available at your local home improvement store, specialty stores, or online.
Summary:
Notice if you smell gas. Use a carbon monoxide or gas detector. Spray liquid gas detector or soapy water on a pipe or appliance.