Recycling one ton of paper can save 17 trees, 7,000 gallons of water, 380 gallons of oil, 3.3 cubic yards of landfill space and 4,000 kilowatts of energy-enough to power the average U.S. home for six months- and reduce greenhouse gas emissions by one metric ton of carbon equivalent (MTCE).
Slate is a fine-grained, foliated metamorphic rock that is created by the alteration of shale or mudstone by low-grade regional metamorphism. It is popular for a wide variety of uses such as roofing, flooring and flagging because of its durability and attractive appearance.
Noun. 1. slate - (formerly) a writing tablet made of slate. tablet-a slab of stone or wood suitable for bearing an inscription.