What is "X" in the following reaction?

Which of the following two events occur to create a sea breeze? select all that apply. warm air rises on the ocean and moves toward the land to cool warm air rises on land and moves toward the ocean to cool cool air moves from the ocean to be warmed by the land cool air moves from the land to be warmed by the ocean

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

Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?