Chapter 28: Renewable Resources and Recycling

Landfill

Site for the disposal of waste materials, leading to release of methane

Sea water

________ is a renewable resource because there is such a large amount of it that humans will not use it all up.

Crude oil

________ is processed through fractional distillation and cracking to produce a wide variety of useful chemicals.

natural resources

Less energy is needed for recycling compared with making a new product from ________, so the emission of greenhouse gases is reduced.

Haber

However, the ________ process enabled humans to produce fertilisers from nitrogen in the air, and has allowed synthetic fertilisers to be produced.

Synthetic fertilisers

________ have allowed intensive farming to become widespread, which has meant that we can produce enough food to support the growing world population.

extracted

remove or take out

ingots

block of solid metal

landfill

places where refuse is buried underground

greenhouse gases

responsible for global warming

crude oil

mixtures of hydrocarbons

energy

capacity of a system

natural resources

minerals that have been made through the formation of the world

environment

Surroundings where people live

recycling

reusing or reprocessing material

copper-rich ores

_____short supply