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Write these graduation wishes in a card or post them on social media. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us ...
Counter cards: Greeting cards that are sold individually. This contrasts with boxed cards. [1] Standard A standard greeting card is printed on high-quality paper (such as card stock), and is rectangular and folded, with a picture or decorative motif on the front. Inside is a pre-printed message appropriate for the occasion, along with a blank ...
In Earth's atmosphere, carbon dioxide is a trace gas that plays an integral part in the greenhouse effect, carbon cycle, photosynthesis and oceanic carbon cycle. It is one of three main greenhouse gases in the atmosphere of Earth. The concentration of carbon dioxide (CO 2) in the atmosphere reached 427 ppm (0.04%) in 2024. [1]
Carbon dioxide is the lasing medium in a carbon-dioxide laser, which is one of the earliest type of lasers. Carbon dioxide can be used as a means of controlling the pH of swimming pools, [141] by continuously adding gas to the water, thus keeping the pH from rising. Among the advantages of this is the avoidance of handling (more hazardous) acids.
Carbon dioxide is a by-product of food metabolism and in high amounts has toxic effects including: dyspnea, acidosis and altered consciousness. [8] Arterial blood carbon dioxide tension. P a CO 2 – Partial pressure of carbon dioxide at sea level in arterial blood is between 35 mmHg and 45 mmHg. [9] Venous blood carbon dioxide tension
It is not known when the letter sweater came to high schools. The earliest known example of a letter sweater in a high school is found in the 1911 yearbook of Phoenix Union High School, Arizona Territory. [1] A student in a group photo is pictured, not in a football uniform, wearing a V-neck sweater with the letter 'P' on the left side.
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Below is the grading system found to be most commonly used in United States public high schools, according to the 2009 High School Transcript Study. [2] This is the most used grading system; however, there are some schools that use an edited version of the college system, which means 89.5 or above becomes an A average, 79.5 becomes a B, and so on.
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