Q: Continue heating the mixture until it boils. The acid mixture will bubble as you add the water and urea. Add the mixture slowly so that it doesn't cause the acid to bubble out of its container. The water/urea mixture neutralizes the nitric acid but not hydrochloric acid in your solution. In general, you will add 1 ounce of precipitant per ounce of gold that you are refining. Avoid putting your face near the container's opening. The smell is very strong and pungent. The acid will turn a muddy brown color, which is actually caused by the separation of the gold particles. Wait 30 minutes to allow the precipitant solution to work on the gold particles.
A: Heat 1 quart of water and add 1 pound of urea to the water. Gradually add the water/urea mixture to the acid. Add a selective gold precipitant to 1 quart of boiling water following the manufacturer's instructions. Add the water/precipitant solution slowly to the acid.

Q: Use dialogue to add humour to a screenplay. Have witty back and forth between characters. Have one character who is full of funny one-liners. Create running jokes that are said throughout the screenplay by different characters. Dialogue gives you a chance to have your characters tell jokes to one another and be witty. For example, you may have one character who uses a signature catch phrase and tone of voice to say their dialogue, creating humor. Develop a character over a long period of a time in a novel so they become endearing, witty, and funny to the reader. Give them a funny childhood or a unique sense of humor. Let the character's voice and actions come through as the novel progresses and add in funny or amusing details about the character. The reader will then get a sense of humor from the character. For example, you may have a character who seems minor in the story but always has a funny aside. You may then have them become more important as the novel progresses, putting their humor front and center. The element of surprise can be a fun way to jolt your reader and make them laugh. Have a plot twist in the play that you find funny and surprising. Keep the viewer guessing and use the element of suspense to create surprise and laughter. For example, you may have a big reveal 3/4 of the way into the play where a character turns out to be a woman dressed as a man. You may stage the reveal so it is funny and surprising for your audience.
A: Emphasize comedy in screenwriting with dialogue. Use long-term character development in a comedic novel. Surprise the reader in a comedic play.

Q: There are 20,000 species of butterflies on the planet, with over 725 different species in North America alone. Before going out to look for caterpillars, you may want to do some research about which caterpillars are native to the area that you live. You can often find a list of native caterpillar or butterfly species on your state's official website. Try asking the librarian at your local library to help you locate books and periodicals that can help you identify native caterpillars in your area. You can find a list of state wildlife websites to help you find caterpillars here: https://www.fws.gov/offices/statelinks.html Once you have identified the types of caterpillars in your region, you can narrow down your search by what kind of caterpillar you'd like to have for a pet. Different kinds of caterpillars develop into different kinds of moths and butterflies, so you may choose one based on its caterpillar state, or on what type of butterfly you'd like to see emerge from the cocoon. Some caterpillars can be dangerous to touch. You may want to take that into account when choosing a type of caterpillar to start looking for. You may want to choose a species of caterpillar that you have ready access to a food source for. Caterpillars prefer leaves from their "host plant" to eat. Different kinds of caterpillars (and therefore butterflies) prefer to reside in different kinds of plants, so It's important that you choose what kind of caterpillar you're looking for in order to know where to look. The plant a breed of butterfly prefers is called a "host plant." Some examples of host plants for certain species of caterpillar are: Monarch butterfly caterpillars prefer milkweed plants. Spicebush Swallowtail caterpillars tend to reside in spicebush. Your best bet to find a Zebra Swallowtail caterpillar is in a Paw-Paw plant. Black Swallowtail caterpillars are commonly found in parsley, dill, or fennel plants. Luna moth caterpillars can be found in both walnut and sweet gum plants. Cecropia Moth, Viceroy or Red-Spotted Purple moth caterpillars can be found in cherry trees. Different caterpillars are more active at different points of the year, but nearly all caterpillars can be found in the Spring and Summer months. You will likely not be able to find caterpillars beyond the early stages of fall. Some caterpillars enter a state similar to hibernation throughout the colder months. Other caterpillars lay eggs that stay dormant until spring. It may not be easy to spot a caterpillar right away. Caterpillars often blend in with their environment as a defense mechanism against predators. One way to spot a plant that likely has caterpillars in it is to look for signs that a caterpillar has been feeding on a plant recently. Different kinds of caterpillars will leave different eating damage, so it's important to look for the type of damage caused by the caterpillar you're looking for. You can find photographic examples of different caterpillar eating damage here: http://www.raisingbutterflies.org/finding-immatures/caterpillar-strip-patterns/ Caterpillars cling tightly to the leaves and branches they are on, so pulling on it could injure the caterpillar or even pull off its legs. Instead, place your hand, a leaf or twig in the path of the caterpillar and allow it to crawl onto it to transport them. Be careful not to touch fuzzy or spiny looking caterpillars, as the bristles you see may be a defense mechanism that can cause skin irritation. Always wash your hands after handling caterpillars.
A:
Find out which caterpillars are native to your region. Determine which kind of caterpillar you're looking for. Research the plants in your yard or area. Start your search in the spring. Look for caterpillar eating damage. Catch a caterpillar by letting it come to you.