While more cost-effective, boiling water reactors are disadvantageous because a: they must be built near public water sources b: the steam produced has a greater likelihood of being contaminated with radiation than in a pressurized water reactor c: they require much more water than other types of reactors d: they take up much more space than other types of reactors

While more cost-effective, boiling water reactors are disadvantageous because - C: they require much more water than other types of reactors

The boiling water reactor needs more water but still it has a major advantage as its overall thermal efficiency is greater than other reactors. This reactor uses more water as a coolant to cool down the fuel and also to heat up the steam.

The steam produced has a greater likelihood of being contaminated with radiation than in a pressurized water reactor

Explanation:

Odyssey

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".