Which positive result could develop if carbon dioxide increases in the atmosphere? a. people breathe carbon dioxide, so earth could support more human life. b. plants give off carbon dioxide, so an increase in plant life could decrease world hunger. c. carbon dioxide will protect people from the sun's radiation. d. carbon dioxide will create more sunny weather, which is good for plant growth.

Which plate boundary causes plates to collide forming mountain ranges, volcanoes, and island arcs? give an example of this type of plate boundary. 2. at which plate boundary do rifts and mid-oceans ridges form? give an example of this type of plate boundary. 3. at which plate boundary do plates slide past each other while moving in opposite directions? give an example of this type of boundary.