Mechanical weathering does not change the of a rock

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

How does hot and cold water affect the air temperature/how do ocean currents affect the air temperature of the locations they pass? !

The largest and deepest ozone hole in the world is over a. antarctica b. australia c. new zealand d. papua new guinea