HELP 15 POINTS The main function of the respiratory system is .

A) the carrying of nutrients to body cells
B) the exchange of gases between the body and the environment
C) the prevention of diseases caused by pathogens
D) the elimination of wastes from the body

Which of the following is a common danger of commercial fishing?

Which statement about the immune system is false? a. lymphocytes reduce inflammation, b. b cells remember specific pathogens. c. most white blood cells kill bacteria d. white blood cells are made in lymph nodes.

Directions: read the descriptions of the four islands presented in the lesson. 1. list two new traits that each new species of rat might demonstrate as it adapts to the conditions on each island. 2. introduce one of the four new rat species to another island and describe one challenge it would encounter and one success as it adapts to its new environment.