2the atmost recensionin ne bodo predsienten
2. the atmosphere traps warmth like a blanket, this keeps the earth's
moderate which allows for humans to exist.
oxygen levels
temperature
carbon dioxide levels
none of the above

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2

is there any options? maybe im just not seeing them but i need the options to

-love shrooms

catya your not at all which answer i've seen you do this on another question!

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.