A 1500 L weather balloon is at a temperature of 290 K on the ground. As it rises the temperature drops. At 15,000 ft, the temperature is down to 210 K. What is the
volume at this elevation? (please show work)

What are the options? physical property can be color, smell, opacity, viscosity, density, infra red spectrum, melting and boiling points, attraction and repulson to magnets, etc.

They both go downwards and the can break apart rocks 

Polyethylene is a strong synthetic polymer that can be used to make toys and bottles. this makes plastics which are important also to people but sometimes it lead to harmful environmental effects such as global warming if these plastics are burned.