Select the statement that BEST describes the role of the immune system. A. The immune system is responsible for keeping invaders from entering the body. B. The immune system is responsible for recognizing foreign invaders. C. The immune system is responsible for attacking viruses. D. The immune system is responsible for preventing illness and defending the body from harmful foreign substances. Please select the best answer from the choices provided. A B C D.

Life expectancy in the united states is (76.4 for men and 81.1 for women). life expectancy is not the same as healthy life expectancy. healthy life expectancy is the number of years a person is expected to live in this number is obtained by subtracting years spent in poor health from overall life expectancy. the world health organization (who) calculates healthy life expectancy in 194 countries. the united states ranks twenty-ninth in the world using this measurement, with an average of of healthy life expectancy. singapore ranks number one (76 years), and japan is number two (75 years).

Which action is the cerebrum responsible for? a. breathing b. coordination c. problem solving d. balance and one more question which characteristic true of both boys and girls during puberty? a. a curvier shape b. a deeper voice c. weight loss d. body hair

Avoiding excess salt and sodium may benefit a person’s health by