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What makes a solution acidic?

A solution can be more or less acidic depending on the number of protons present in the solution. Strongly acidic solutions have a pH between 0 and 4 and have a high proton content. Strong acids completely dissociate in water into their respective ions. Weak acids have fewer protons in them than strong acids and partially dissociate in water. Weakly acidic solutions have pH values between 3 and 7.

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What are characteristics of sponges?

Sponges gain their structure from a skeleton of collagen with reinforcing spicules of either calcium or silicon compounds. They are either radially symmetrical or asymmetrical. These structures are full of pores in which specialized collar cells sit, constantly drawing in water and filtering out food particles. The waste water is then pushed into a central chamber and out a large opening.\nSponges do not have tissues; thus, they do not have cardiovascular or nervous systems, nor do they have any muscles or sense organs. Some species of sponges produce only one type of gamete, while others prod..

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What colors go with orange?

The vibrant color orange offers a cheerful, bold component in decorating a home or office space. It is formed when red and yellow are combined equally. Depending on the accent colors chosen, the moods that orange decor can establish include a nostalgic, vintage look and an earthy, organic feel. Orange is also a component in the palettes of specific geographic regions, such as the Mediterranean and the Colombian color palettes.

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What are some invasive plant species?

When introduced into a new ecological environment, an invasive plant species, which is typically a non-native plant, can also have adverse effects on humans or the economy of a region, notes Fed.us. When invasive plants aggressively spread in a region, it can also lead to some native plant species becoming endangered.Some other invasive plant species include purple loosestrife, tamarisk and witchweed. As of 2015, tamarisk and Russian olive are causing problems in the western region of the United States, notes USDA.gov. Gardeners are advised not to plant purple loosestrife because the plant see..

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How do you learn the anatomy of tendons in the legs?

In general, tendons attach muscles to bones, the Academy of Orthopaedic Surgeons explains. The patellar tendon links the lower extremity of the kneecap to the upper edge of the shinbone. Along with the quadriceps muscles — rectus femoris, vastus lateralis, vastus medialis and vastus intermedius — and the quadriceps tendon, which attaches these muscles to the kneecap, the patellar tendon helps the knee straighten.\nThe Achilles tendon is found at the extremity of tissue formed by the union of the soleus and gastrocnemius muscles, commonly known as calf muscles, WebMD explains. The tendon links ..

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What are some facts about the Scorpius constellation?

Scorpius is composed of 18 main stars, 14 stars with planets and 13 stars with an apparent magnitude greater than 3.00. The brightest star is the red-tinted Antares, while the closest star to Earth is Gliese 682, located 16.44 light years away. Other important stars in the constellation are Dschubba, Sargas, Jabbah, Girtab, Graffias, also known as Acrab, Iclil, and two stars named Alniyat, also known as Sigma Scorpii and Tau Scorpii. The nova U Scorpii, also contained with Scorpius, has the fastest period of any known nova. Deep space objects situated within Scorpius include the following star..

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How many inches is 24 centimeters?

The word "inch" derives from the Latin word "uncia," which means "one-twelfth." In this case, an inch is 1/12 of a foot. The precise length of an inch has varied considerably throughout its history, from its earliest appearances in the Middle Ages as well as in different geographic areas. The modern inch was officially standardized on July 1, 1959, in a six-nation international agreement for the standardization of the yard and the pound.

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How is gold made?

Gold is a heavy element that was not present in the early universe. The process of synthesizing gold began with the formation of the first stars. Main-sequence stars produce energy by fusing hydrogen into heavier elements throughout their lifespan. This process stops at iron and nickel, however, as the fusion of these nuclei takes more energy than it produces and cannot be sustained. Elements heavier than iron, such as gold, can only be produced during the final collapse of supermassive stars. This process, called a core-collapse supernova, occurs when a star, which might be hundreds of times ..

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What are some causes of personal pollution?

Some causes of personal pollution and their solutions include using too many chemicals when gardening and not disposing of them properly, as this contributes to infected water systems. In addition, people who allow their drains to clog with rubbish, pet waste and other substances contribute to urban stormwater runoff, according to the United States Environmental Protection Agency. It is, therefore, important to find green disposal methods. Both individuals and businesses engaging in incorrect chemical disposal pollute stormwater, which includes antifreeze and petrol. Some local governments off..

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What is the center of a tornado called?

Tornadoes are formed from energy that is released in thunderstorms and concentrated in a small area. In the United States, tornadoes are most common in the central plains of North America. They occur most often in the spring or summer during the afternoon or evening. Winds produced by tornadoes can reach up to 300 miles per hour. The biggest threats to humans and animals from tornadoes is flying debris and the possibility of being tossed around in the wind.

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