What are deep ocean currents primarily driven by? a. temperature and salinity gradients b. wind and temperature gradients c. wind and the coriolis effect d. wind and salinity gradients

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