Which statement best explains why Iceland has so many active volcanoes? A Iceland overlies a boundary between two tectonic plates that are colliding.
B Iceland overlies a boundary between two tectonic plates that are moving apart
C Iceland is on a single tectonic plate and is far from any plate boundaries.
D Iceland is on a single tectonic plate that is moving under another plate.

Hurryyy ! a student is asked to describe the path of a paper airplane that is thrown in the classroom. which statement best describes the path of the paper airplane? a. the paper airplane will move in a straight line, according to newton’s first law of motion. b. the paper airplane will drop straight to the ground once its inertia gives in to the force of gravity. c. the paper airplane will create a curved path toward the floor as it is pulled toward earth’s center. d. the paper airplane will orbit around the desk because it is the object with the largest mass in the room.

Which of the following events did not occur as a result of china’s open-door policy? a. trade between japan and china was encouraged. b. all countries were given equal access to chinese ports. c. foreign influence in china increased. d. the influence of the communist party weakened.

Which statement best describes how chemical equations demonstrate conservation of mass?