Which one has indefinite shape and indefinite volume? * 1.Aluminum sheet
2. Liquid water
3. Air
4. O Copper wire

gas: indefinite shape, indefinite volume. Indefinite shape means that the sample in question takes on the shape of the container. If some water was poured from a round container into a square container, the shape of the sample would change. Indefinite volume means the sample would expand to fill the entire container.

Explanation:

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.