What law states that energy can neither be created nor destroyed, but it is transformed?
question 13 options:
law of thermonuclear energy
law of kinetic energy
law of conservation of energy
law of thermal energy

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

the answers would be

the first one and the second one

the dissolution of polymer can be thermodynamically described in 2 steps.