Answer:
C New Zealand was colonized by the British.
Explanation:
In 1840 britain colonized New Zealand.
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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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Most teenage deaths and illnesses are brought on by risky behaviors, which may be divided into four categories:
1. Use of cigarettes
2. Alcohol
3. Intoxicating substances.
4. Poor nutritional choices.
What are examples of high risk behaviors?
High-risk behaviors are defined as acts that increase the risk of disease or injury, which can subsequently lead to disability, death, or social problems. The most common high-risk behaviors include violence, alcoholism, tobacco use disorder, risky sexual behaviors, and eating disorders
Why do teenagers take risks?
Risk-taking increases among childhood and adolescence as a result of modifications around the time of puberty in the mind's socio-emotional system main to improved reward-searching for, particularly in the presence of friends, fueled mainly by a dramatic remodeling of the brain's dopaminergic system.
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Just make sure that you wrrite about The definition of life support and why it's important first.
Then, you should look into kind of life support with additional how and when to use it
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