a heavy carbon footprint是什么意思

a heavy carbon footprint是什么意思 carbon a heavy CHEMISTRY-RELATIVE ATOMIC MASSthe mass of a hydrogen atom 1/1H is equal to 1/12 of the mass of a carbon-12 atom,so its relative isotopic mass is 1.A magnesium atom 24/12Mg is twice as heavy as a carbon-12 atom,so its relative isotopic mass is 24再 Why is it necessary to encourage a low carbon lifestyle? Today with a heavy heart.Today with a heavy heart. a heavy silence和a heavy atmoshphere是什么意思 with a heavy heart是什么意思? He _____ a heavy build After a Heavy Snowstorm thankyou what heavy traffic还是what a heavy traffic It rining ( ) A.heavy B.heavily C.too heavy -There was a( )rian last night.- Yes.It rained( ).A heavy;heavily B.heavily;heavy C.heavy;heavy carbon life carbon steel plain carbon carbon是什么意思 carbon offsetting