What mathematician is known for having a famous triangle? Pascal’s triangle, in algebra, a triangular arrangement of numbers that gives the coefficients in the expansion of any binomial expression, such as (x + y)n. It is named for the 17th-century French mathematician Blaise Pascal, but it is far older. Who created right triangles? Pythagoras was […]
Can you practice psychology in a different country?
Can you practice psychology in a different country? Health-care care provider licensing is strictly state-based, so your psychology license only allows you to practice psychology in the state or territory that issued your license. When a patient comes into your office, you can provide psychological services even if the patient lives elsewhere. Can a UK […]
Why does air move in or out of your respiratory system?
Why does air move in or out of your respiratory system? As we exhale, the diaphragm moves upward and the chest wall muscles relax, causing the chest cavity to contract. Air pressure in the lungs rises, so air flows from the lungs and up and out of respiratory system through the nose or mouth. What […]
Are chickens noisy at night?
Are chickens noisy at night? Fact: laying hens — at their loudest — have about the same decibel level as human conversation (60 to 70 decibels). The noise level of a rooster’s crow is about the same as a barking dog; 90 decibels. But there are ways to keep roosters quiet throughout the night. Many […]
What race mostly lives in California?
What race mostly lives in California? No race or ethnic group constitutes a majority of California’s population: 39% of state residents are Latino, 36% are white, 15% are Asian or Pacific Islander, 6% are African American, fewer than 1% are Native American or Alaska Natives, and 3% are multiracial or other, according to the 2019 […]
How many countries does the Olympic torch go through?
How many countries does the Olympic torch go through? seven countries The relay took 12 days, beginning with the flame ceremony in Olympia and passing through seven countries taking part in the Games—Greece, Bulgaria, Yugoslavia, Hungary, Austria, Czechoslovakia and Germany, and their capitals. The 3,075-kilometer relay was completed solely by runners. Where is the 2021 […]
How do you address a female royalty?
How do you address a female royalty? For male members of the Royal Family the same rules apply, with the title used in the first instance being ‘Your Royal Highness’ and subsequently ‘Sir’. For other female members of the Royal Family the first address is conventionally ‘Your Royal Highness’ and subsequently ‘Ma’am’. What is the […]
What do population pyramids tell us about a population?
What do population pyramids tell us about a population? Population pyramids show the structure of a population by comparing relative numbers of people in different age groups. A population pyramid tells us how many dependants there are. There are two groups of dependants; young dependants (aged below 15) and elderly dependants (aged over 65). Why […]
Why is acid precipitation important?
Why is acid precipitation important? Acid rain that seeps into the ground can dissolve nutrients, such as magnesium and calcium, that trees need to be healthy. The acidic clouds and fog strip important nutrients from their leaves and needles. This loss of nutrients makes it easier for infections, insects, and cold weather to damage trees […]
What pollinates yellow dandelion?
What pollinates yellow dandelion? This early, easily available source of food is a lifesaver for pollinators in spring. Bumblebees, solitary bees and honeybees all visit dandelions for food, along with hoverflies, beetles, and butterflies such as the peacock and holly blue. What are dandelions pollinated by? Long before flowers become important, honey bees are in […]