How are Earth's resources are being used faster than they can renew ?

Carbon emissions currently make up 60 percent of humanity's ecological footprint. One reason for this overconsumption of resources, according to Wackernagel, is that our population is increasing every year. What's more, incomes are rising as well, which increases demand and makes people want to consume more.

Since the 1970s, humans have used more resources than the planet can regenerate. ... The other is the planet's ability to provide or renew those resources every year: its “biocapacity”. When our ecological footprint exceeds Earth's biocapacity, that's unsustainable resource use.

Hope This Helps!

-Lexie

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.