Which of the Earth’s spheres is made up of the gases and air that surround the Earth and sustain life? A. the hydrosphere
B. the lithosphere
C. the biosphere
D. the atmosphere

Please select the best answer from the choices provided
A
B
C
D

The earth's internal process which drives seafloor spreading is

Match the mountains with the type of collision that formed them. a. andes b. aleutians c. north american cordillera d. appalachians 1. continental- continental 2. continental- oceanic 3. oceanic- oceanic 4. arc- continent

If you were a casual recreational hiker with young children, which of the following trails would be least strenuous for a leisurely family outing? a. merced lake trail b. mirror lake loop trail. c. tenaya lake and tuolumne meadows trail d. el capitan trail