The Binet-Simon scale of intelligence expressed a child’s score in terms of mental age.
This is a cognitive and intelligence test used to diagnose developmental or intellectual disabilities in young children. The test measures five weighted factors and consists of both verbal and nonverbal subtests.
From Binet's work, the term "Intelligence Quotient" or "IQ" has been added to the vocabulary. IQ is the ratio of "mental age" to real age, with an average of 100. So her IQ of an 8-year-old child who passed the 10-year-old test would be 10/8 x 100, or 125.
Binet-Simon and his colleague Theodore Simon developed a series of tests to assess mental abilities. Instead of focusing on learning information such as math or reading, Binet focused on other mental skills such as attention and memory.
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Answer:
food
Explanation:
The Neolithic revolution was the term coined by Australian historian V Gordon Childe. According to him, the agriculture started in the Middle East around the area known as Fertile Crescent. while earlier humans lived in bands of small hunter-gatherers, with neolithic revolution they began to live in settled communities. It started around 10,000 BC. Later humans in other parts also started growing crops. Breeding of animals also became important once the humans started to settle. There are a myriad of theories that explain why humans started agriculture. The time period of the neolithic revolution in different parts of the world varies.
Answer:
“ It will most likely take 2–3 days.. Depending on other factors like weekends and weather.” Found on Quora
Explanation:
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Mexico has been heavily influenced by Spanish and American cultures for quite some time now like:while during the conquest of Mexico by the Spanish,they had introduced the Roman Catholic faith and the western education and many Mexican customs and tradition such as mariachi and festivals were part of Spain’s own influences. During the Mexican-American War, true the US won and acquired territory’s from Mexico, so many Mexicans became citizens of the United States and brought their own cultures to America such like their food,their festivities and actual better education as well also some opportunity’s in business and careers, too. So we and the Spanish helped shape Mexico’s culture but while doing so they changed us as well America would be much different if not for them and probably it’s the same for Spain.
1. Samples of a microbial colony obtained from the natural environment are not pure culture. They are mixed cultures because the environment consists of an array of microorganisms and not one specific organism. A sample obtained from the natural environment such as water or soil may contain several species of microbes that need to be further isolated to obtain a pure culture.
2. Isolation streak plate technique involves the dilution of the sample several folds and then streaking a small amount using a sterile inoculation loop on an agar plate in a zig-zag manner. This is done to obtain a pure culture of bacteria from a mixed population by separating the microprocessor. When the sample is diluted into a small concentration and is streaked onto agar placed, widely spaced, discrete colonies of bacteria can be observed. These isolated colonies can be further cultured to obtain pure cultures by picking and re-streaking them on fresh agar plates.
3. A microbial colony is considered a pure culture because it consists of single species. A single species of bacteria cluster and form an isolated colony on an agar plate which can be further plated on fresh medium.
3-1 - If your agar plate shows discrete uncluttered colonies then you have obtained an isolated colony. The following picture might help you to understand.
3-2. If you subculture isolated microbes into a sterile nutrient broth without any contamination, it will still be considered pure culture because it is single isolated species in a sterile aseptic environment of the nutrient broth.
3.3. A pure culture can become a mixed culture due to contamination. This could be caused by airborne bacteria if your conditions are not aseptic. Contamination is possible if the work area is not clean and sterile or if the glassware is not sterile. The contamination can transform your pure culture into a mixed culture and is hence problematic. So, it is very important to maintain a sterile and aseptic environment, glassware, and instruments.
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