Article: Nail polish bottles are made out of glass. Whacking the cap against something might actually cause it to snap off, along with the neck of the bottle.
Question: What is a summary of what this article is about?
Don't hit the cap against the counter.

Problem: Article: String algae, which looks like strands of hair floating on the water or clinging to the walls, harms the pond’s ecosystem. A scrub brush such as a toilet brush can be used to lift up and remove the algae. Skimming nets from a home improvement store also help reach the algae, but you can also yank out the algae by hand. Some string algae is beneficial to the pond’s health. The algae that sticks on the pool liner, as long as its growth is under control, protects fish and combats green water caused by other algae. Try to control the algae using natural maintenance methods such as by adding plants, aerating the water, and removing waste yearly. When your pond is very green, hydrogen peroxide may clear up the algae faster. Add about one pint (.48 L) of store-bought hydrogen peroxide for every 1,000 gallons (3785.4 L) of pond water. Dilute it if possible by letting it run with a fountain, waterfall, or other moving water.  Results will vary between ponds, but you can increase the amount of hydrogen peroxide as needed. Be careful though, because it can harm fish and plants. Chemicals such as String Algae Control are less harmful but more expensive options for existing algae problems. Purchase barley straw online or at a garden center. Stuff the straw into a mesh bag, hay net, or fishnet tights. Allow the bag to sit in the pond for several weeks, preferably where the water spreads, such as a fountain or waterfall, if possible. After a few weeks, the barley will start to degrade. Remove any rotting pieces to avoid adding more nutrients for the algae.
Summary: Remove string algae with a brush, net, or your hand. Add hydrogen peroxide for quick water treatment. Add barley straw for a natural treatment.

. If you’re going to be debating in a formal setting, such as for a class or for a club, you’ll want to be sure you know how a debate actually works. Formal debates follow a formula, and you’ll want to know that formula like the back of your hand so that you’re prepared. It’s also important because breaking from the formula can lose you points.  Usually there is a statement and two or more teams or single debaters will be assigned to either agree or disagree with the idea. You’ll then take turns making your points according to a set period of time. There are a couple of different debate styles (which determine the rules and how the debate works), so you’ll need to know which one you’re using in order to be clear on the rules. It’s a good idea to look into this well in advance and do some research online. Look for words like “competitive debate”, “Parliamentary debate”, or “Oxford debate”. These are some of the styles of debate you might encounter. When you debate, stay calm. Don’t start shouting or get angry. This will show weakness to your opponent. Instead, keep your voice even and keep your facial expression neutral. This makes it much harder for your opponent to find what buttons they can press to make you trip up. If you’re having trouble staying calm, try focusing on your breathing for a minute or two. When you talk, speak clearly so that people can understand you. Speaking clearly also makes you sound smarter and more confident. Speak clearly by using a loud enough volume that people can hear you and then enunciate your words. Don’t mumble or slur your words but say each word deliberately and say each syllable carefully. It’s easy to catch poor enunciation when reciting tongue twisters. Try this one: “How can a clam cram in a clean cream can?” When you explain to someone how you arrived at the conclusion that you came to, deliberately and step by step, you’re forcing their brain to think in the same way that yours does. As long as your reasoning is at least good on the surface, this can be one of the most effective ways to bring someone over to your side of the argument. When you argue with someone, be respectful. Don’t insult them, talk over them, or judge them. Doing this can be seen as a sign that your argument isn’t very good, plus it makes people defensive and much less willing to listen to you or want to agree with you. You should also be fair in an argument. Don’t distort the facts. Use evidence against them that is recent and directly related, not old and “water under the bridge”.  A bad example of debating would look like: “Why should we listen to you? You broke the system last year when you were in charge of the project. You’d probably just ruin this too.” A good example of debating would look like: “I know you’re really excited about this project but the situation is very sensitive. It would be better to use someone with more experience so that it can be done more efficiently.” Although you don’t have to actually be confident, acting confident can make you and your argument much more appealing and believable. When you don’t act confident, you communicate (even if it’s not true) that you don’t think your argument is a very good one. You can do some simple, easy things to make yourself appear more confident, though. Make eye contact with your opponent, as well as people in your audience if you have one. Don’t fidget, instead using your hands to talk or keep them pinned in front of you. Speak clearly and with purpose, avoiding filler language like “umm” and “ahh”. Just a few adjustments will have you seeming much more sure of yourself.
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One-sentence summary --
Follow the form, if debating formally Keep calm. Speak clearly. Explain your logic. Be respectful and fair. Act confident.