Match the mountain range with its formation. Grand Tetons
Two continents colliding

Himalayas
Plates spreading

Andes
Two ocean plates colliding

Aleutian
Near a subduction zone

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?