1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alisiya [41]
3 years ago
7

In 1937, a man employed to lay water pipes was found to be the source of a severe epidemic of typhoid fever. The man, an asympto

matic carrier of Salmonella enterica serotype Typhi, the bacterium that causes typhoid, habitually urinated at his job site. In the process, he contaminated the town's water supply with bacteria from his bladder. Over 300 cases of typhoid fever developed, and 43 people died before the man was identified as the carrier.
How was this carrier identified?
a) nasal swab
b) sputum sample
c) throat swab
d) urine culture
Biology
1 answer:
Wittaler [7]3 years ago
7 0
Urine culture

It literally says he peed in the water
You might be interested in
1.How do speices interact in nature?
posledela
Species like nature, it’s their habitat . their energy concerts
8 0
2 years ago
What fills in the need in the stream/ocean for salmon to have cold, clean and clear water
Dahasolnce [82]
<span>The salmon is among the most revered of coastal animals, for its cultural and spiritual importance to First Nations, its world-famous tasty flesh, and its role in the historical economy of BC. The most common salmon in our local waters are Chum and Coho. All Pacific salmon species are anadromous, meaning they spend most of their life in the ocean but migrate to fresh water to breed. Consequently they interact with several different ecosystems, and play important roles in terrestrial, freshwater and marine food webs.</span>
3 0
3 years ago
What organ is on the left side of your stomach?
pochemuha
Spleen,a part of the pancreas
3 0
3 years ago
Herbivores typically have monocular vision to allow them a wider range of vision, which helps them elude predators. What type of
Vsevolod [243]
The type of adaptation that herbivores having a monocular vision to allow them a wider range of vision is called the structural or physical adaptation. Structural adaptation is the physical features of an organism or a characteristic in the body part of an organism which helps them survive in their natural habitat or environment. 
8 0
3 years ago
5.You are doing an experiment involving the gain in mass of rats given different amounts of
dybincka [34]

Answer:

The independent variable are the vitamins .

The dependent variable are the rats.

Explanation:

The vitamins are the independent variable because they are are controllable. You can control how many vitamins the rats will be given.

8 0
3 years ago
Other questions:
  • Mirror neurons are believed by some scientists to provide a biological basis for:
    7·1 answer
  • Panic grass (Dichanthelium lanuginosum) can live in geothermally heated soils only when the fungus Curvularia protuberata is pre
    15·1 answer
  • A complex molecule containing the genetic code
    14·1 answer
  • List the major food groups of the USDA Food Patterns, list the nutrients contributed by each food group, provide 2 examples of s
    8·1 answer
  • What processes are necessary in order to turn sand into rock?
    10·1 answer
  • Strenuous exercise leads to muscle cramp give reason​
    5·2 answers
  • Which of the following exceptions to the Fourth Amendment allow law enforcement officers to search email, telephone, medical, an
    11·2 answers
  • 11. Two fruit flies have different parents. One fruit fly has orange eyes while the other has red eyes.
    10·1 answer
  • Pls help i dont understand :( will give Brainliest + 25 points!!
    12·1 answer
  • The failure of homologous chromosomes to separate correctly during meiosis is called
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!