When humans burn fossil fuels, most of the carbon quickly enters the
as carbon dioxide.
•hydrosphere
•atmosphere
•geosphere
•biosphere

The crust of earth may a- continets and ocean floors. b-continents only. c-layers of sedimentary rocks and continents. d-all of the above

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Which metals are called noble metals