Which substances in diagram g are elements and which are compounds?in each case briefly explain your choice

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?

Which fossil fuel is mainly used for heating and cooking? a. electricity b. coal c. petroleum d. natural gas