Arrange the following sentences in a logical sequence:
a. This process also reduces the amount of waste going into landfills.
b. For making this work we put used materials in a landfill, it is developed and made into new items.
c. Lastly, as a result, it also helps to bring prices down on items that are made from using recycled water.
d. Recycling is the term used to describe an alternative form of getting rid of used materials.