Problem: Article: Pick a polite closing, like "sincerely," "best," "thank you," or "yours truly." Then, skip 1 or 2 lines and sign your name. Your closing should look something like this: "Sincerely, Brian." Read over your letter once or twice to catch any spelling or grammar mistakes. Then, ask a trusted adult to do the same. You may be able to fix some small mistakes. However, if you find yourself crossing out whole sentences, it's probably a good idea to start fresh so your letter looks nice and neat. White-out can be helpful in correcting mistakes. Ask your parents or guardian for an envelope and slip your letter inside. If you're giving your letter to your teacher in person, just write their name on the front and hand it to them before or after class. if you want to mail your letter. Ask your parents or guardian to help you address the envelope using the correct address and formatting specific to your country. The envelope should include your teacher's address in the center and your own address in the top left corner. If your handwriting is a little messy, it might be a good idea to ask an adult to write your teacher's address for you so your letter doesn't get lost in the mail. Don't forget to ask your parents or guardian for a stamp.
Summary: Close and sign your letter. Proofread your letter. Put your letter in an envelope. Address your envelope

Problem: Article: Look for an herbicide approved for aquatic use that includes one of the following active ingredients: glyphosate, imazamox, imazapyra or diquat. These chemicals are effective on cattails. These measurements are needed for you to determine how much herbicide you should use to kill your cattails. Get the measurements for your pond. If a contractor put in the pond, you should be able to get the measurements from the contractor's office. Your local survey control service office may also have measurements available or aerial photos you can use to determine your pond's measurements. If not, get a survey of the pond or measure it yourself. Methods you can employ yourself without special equipment include chaining and pacing. Chaining involves putting a stake at either end of a measuring tape or length of wood, chain, or rope of known length. Place the stakes in the ground, remove them, and stick them back in the ground, this time, with the first stake in the same place where the second stake left a depression. Continue moving the measuring tape and stakes around the perimeter of the pond. Count the number of times you need to move the stake, and multiply this number by the length of the measuring tape to get the perimeter's measurement. Pacing functions in the same way, but the known length is your normal stride. Calculate area. Determine the shape of your pond, whether it's roughly square, circular or triangular, and use the appropriate formula to solve for area. Calculate volume. The volume of a pond is the area multiplied by the average depth of the pond. Take depth measurements by slowly dropping a weighted line into the water at various locations in the pond. Use the depth measurements you've obtained to calculate an average depth for the pond. The more measurements you take, the more accurate your average depth will be. It is best to use herbicides in the spring when growth first starts. The cattail plants are smaller at this time, which makes application easier. Read the directions on the herbicide container. Different formulas will have different water use restrictions. You need to familiarize yourself with these restrictions so you know when you can use the pond again for recreation or livestock use. The directions will also indicate how much herbicide to use based on the area and volume of your pond. Divide the pond into sections if you have a large amount of cattails to remove. Once the herbicide takes effect, the decomposition of the dead cattails can deplete the dissolved oxygen levels in the pond, killing fish. Killing fewer cattails at once will reduce the amount of decomposing vegetation in the pond. Use a pond or yard sprayer to distribute the chemical onto the cattails. Be careful to limit overspray as much as possible. Wait 10 to 14 days before spraying the next section if you chose to spray your pond in sections. This will help keep the dissolved oxygen levels in the pond more stable. Wait 10 to 12 days before cutting the cattails to allow the chemical enough time to work. You want to provide adequate time for the herbicide to fully kill the root system. Use a weed whacker or sharp blade to cut down the cattails.
Summary: Choose a chemical removal method. Calculate the area and volume of your pond. Apply the herbicide to the cattails. Cut down the dead cattails. Remove the dead cattails from the pond.

Problem: Article: Travel to a geographical region where salamanders generally reside. One-third of all salamander species can be found in North America, specifically in the Appalachian Mountains region. Salamanders also reside throughout Central America, South America, Asia, and Europe. There are over 700 different species of salamanders in the world, and they all come in a variety of sizes and colors. Salamanders have long, smooth bodies and four limbs, and they can be a small as 2 inches long, while others can grow to 4 feet long! Some species of salamanders are brightly colored, which can indicate that they are poisonous. The hellbender is a type of large salamander found in North America, which can grow up to 2.5 feet in length! Northern red salamanders are typically found in Maryland and live in natural springs. They are a bright, beautiful red with black flecks. Some salamanders, such as the axolotl or the Mexican salamander, are pale pink or white. These types of salamanders live underground and are rarely exposed to sunlight. Most salamanders live underground but will move out of dormancy in the spring to breed in vernal pools, which are shallow depressions in the ground that contain water during this time of year. This is the best time of year to search for these critters in the wild. Locations near wetlands, streams, rivers, ponds, marshes, and swamps are ideal locations for salamanders to make their home. Most salamanders have a long larval stage and spend most of their early life in the water, much like frogs do. These moist environments are ideal for catching a glimpse of these animals in the wild. Edge environments, or eco tones, describe areas where two different habitats meet. Salamanders can often be found in these environments, so be sure to look near the shorelines of streams or near shrubs and bushes near shallow water. Salamanders may also be found around seeps, which are areas where ground water slowly moves toward the surface. Keep an eye out for springs, seeps, and other boggy areas where these amphibians often make their home. Salamanders are carnivorous and eat a variety of insects and worms. In the wild, a salamander will eat crickets, worms, larvae, spiders, slugspretty much anything that it can easily swallow! If you know where to find their favorite meals, you may have a greater chance of spotting a salamander scurrying about. Many of the insects in the salamander's diet can be found under logs, rocks, and branches, so you may spot a salamander lurking around these areas. Larger salamanders will often eat frogs and smaller salamanders, while aquatic salamanders will eat small fish, crayfish, and other small aquatic creatures. If you come across a pool of still moving water with lots of rocks and tree roots, take a closer look! Crayfish are often found there, so your chances of spotting a salamander are greater. Make plans to search for salamanders at night or when the weather is overcast and rainy. Salamanders are nocturnal and can usually be found at night; however, they may also venture out during daytime hours when it is cloudy or raining.
Summary:
Visit the salamander's home. Know what to look for. Wait for spring. Visit damp locations. Look in edge environments. Look for their food sources. Search at night or on rainy days.