The chemical equation describing the burning of hydrogen gas is: 2H2 + O2 ---> 2H2O. Why is this both a synthesis and a combustion reaction?

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

Why is carbon ideal for making different compounds?

Stage in which a star’s outer layers have started to cool and grow outward?