an increase in their use can create serious environmental problems such as water pollution, and their substitution for more traditional fertilizers

an increase in their use can create serious environmental problems like water pollution, and if substituted for more traditional fertilizers, it

if these fertilizers are used increasingly, they can create serious environmental problems such as water pollution, and if used as substitutions for more traditional fertilizers, they

the increased usage of these fertilizers can create serious environmental problems such as water pollution, while if substituted for more traditional fertilizers, this substitution

the increased usage of these fertilizers can create serious environmental problems like water pollution, while their substitution for more traditional fertilizers