1. Materials or substances such as minerals, forests, water, and fertile land 7 points that occur in nature and can be used for economic gain= *
Solar Energy
Soil
Oil
Coal
Fish
Birds
Trees
Plants
Water
Oceans
Timber
Energy
Metals
Flowers
Animals
Minerals
Oxygen
Natural Gas Fossil Fuels
Atmosphere
resources
ideas

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3