Is to reduce resource consumption. This is the first step, because it is the simplest and best. Reducing the use of resources will help conserve resources be most effective.
Is to reduce the consumption of resources. This is the first step because it's easy and best. Reducing the use of resources to help save resources would have been most effective.
The consumption of resources is down. This is the first step, because do the easiest and best. Reducing the use of various resources down will help save resources down to the most powerful.