Switch to the Game tab. Select Level 2, and answer all five questions. Given the amount of each reactant for a chemical
reaction, you'll have to figure out the amount of product and the amount of each reactant left over. Report your score.

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.

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: