is the only (0) ... we know of in the universe that can support human life.
(1) ... human activities are making the planet less fit to live on. As
the western world (2) ... on consuming two-thirds of the world's resources
while half of the world's population do so (3) ... to stay alive we are
rapidly destroying the very resource we have by which all people can survive and
prosper. Everywhere fertile soil is (4) ... built on or washed into the
sea. Renewable resources are exploited so much that they will never be able to
recover completely. We discharge pollutants into the atmosphere without any thought
of the consequences. As a (5) ... the planet's ability to support people
is being reduced at the very time when rising human numbers and consumption are
(6) ... increasingly heavy demands on it. The Earth's natural resources
are there for us to use. We need food, water, air, energy, medicines, warmth,
shelter and minerals to (7) ... us fed, comfortable, healthy and active.
If we are sensible in how we use the resources they will (8) ... indefinitely.
But if we use them wastefully and excessively they will soon run out and everyone