1. identify the following changes as physical or chemical changes a. baking soda mixes with vinegar and produces carbon dioxide gas. b. the copper coating on the statue of liberty turns green. c. addition of salt melts ice on the highway. d. steam condenses on the windowpane. e. sugar dissolves in a cup of coffee. f. natural gas burns in a furnace.

The arctic is a cold deset biome, which one of the answers is not correct? a) animals in cold deserts burrow to get out of the harsh climates. b) vegetation in cold deserts is normally shallow rooted small shrubs. c) animals in cold deserts hibernate most of the year to get out of the cold. d) soils are very heavy and course. e) the region receives less than 10 inches of precipitation annually.