I think so Flat worms are more complex in all these options.because they have better response system than other options.
The statement given in the question is TRUE; the health status of the American population is poor in international comparison.
America is one of the richest country in the world, but it is not among the healthiest. Despite the increase in life expectancy in past decades, Americans still live shorter lives and experience more injuries and illnesses compare to other countries of the world.
The major health conditions in which the American fare badly compare to other wealthy countries of the world include: infant mortality, injuries and homicides, HIV and AIDS, drugs related mortality, obesity and diabetes, hearth diseases, sexually transmitted diseases, teenage pregnancy, chronic lung diseases and disability.
Typhoid fever is most common in non-industrialized countries. Travelers to Asia, Africa, Eastern Europe, and Latin America are especially at risk. Salmonella typhi bacteria are shed in the urine or stool of infected persons, including chronic carriers. There are no known animal reservoirs for typhoid fever.
Is there a photo or something