How Aware Are You About Romaine Lettuce?

Explanation
Romaine lettuce has the feature of tolerance of heat, which means it can withstand higher temperatures compared to other types of lettuce. This characteristic allows it to be grown and thrive in warmer climates, making it a popular choice for cultivation in regions with hot summers. Other types of lettuce may not be able to tolerate the same level of heat, making romaine lettuce unique in this aspect.

Explanation
Lettuce is sold in two main forms: heads or heart. This means that you can either purchase a whole head of lettuce or just the inner, more tender leaves known as the heart. The other options listed, such as ribs, flesh, and body, do not accurately describe how lettuce is sold.

Explanation
The correct answer is "Public health of Canada." This refers to the overall health and well-being of the Canadian population, including the prevention and control of diseases, health promotion, and the provision of healthcare services. It is important to distinguish it from other options, such as public healthcare in America or public health care of America, as PHA specifically pertains to Canada.

Explanation
The word "allegedly" suggests that there is a claim or accusation that the lettuce is highly contaminated, but it has not been proven or confirmed. This means that the statement may not be true and should be treated with caution until further evidence or verification is provided.

Explanation
In Britain, the lettuce variety known as "Cos Lettuce" is commonly referred to as "Cos Lettuce".

Explanation
In ancient Egypt, there was a myth that lettuce inflicted bitterness. This belief may have stemmed from the fact that lettuce leaves contain a milky sap that can have a bitter taste. Additionally, lettuce was associated with the god of fertility, Min, who was often depicted with an erect phallus. This association with fertility and sexuality may have contributed to the belief that lettuce could cause bitterness or negative consequences.

Explanation
Romaine lettuce is associated with Shiga toxin. Shiga toxin is produced by certain strains of E. coli bacteria, particularly the strain E. coli O157:H7. Consumption of contaminated lettuce can lead to Shiga toxin-producing E. coli (STEC) infection, which can cause symptoms such as diarrhea, abdominal pain, and in severe cases, kidney failure. Therefore, Shiga toxin is the correct answer as it is the disease agent associated with Romaine lettuce.

Explanation
The outbreak of water in Arizona caused the diseased lettuce. This suggests that the water in Arizona was contaminated or infected in some way, leading to the contamination of the lettuce. It is possible that the water was contaminated with harmful bacteria or other pathogens that affected the lettuce plants, resulting in the disease.

Explanation
Lettuce is believed to prevent cancer because it contains antioxidants, such as vitamin C and beta-carotene, which help protect cells from damage caused by free radicals. Additionally, lettuce is a good source of fiber, which can help maintain a healthy digestive system and reduce the risk of certain types of cancer, such as colorectal cancer. While more research is needed to fully understand the extent of lettuce's cancer-preventive properties, current evidence suggests that including lettuce in a balanced diet may contribute to a lower risk of cancer.

Explanation
The PHA (or Public Health Agency) identified the lettuce as dangerous.