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An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.