Water in rivers and lakes but not sea water is conisdered to be

Explanation: Fresh water (or freshwater) is any naturally occurring water except seawater and brackish water. Fresh water is generally characterized by having low concentrations of dissolved salts and other total dissolved solids.

answer; seasons change because earth tilts on its axis; and the angle of the tilt causes the northern and southern hemisphere to trade places throughout the year;

answer; ///(true)/// fusion occurs in the sun's core;