S2 exam revision 1.26

Use of the latest technology for____ sandstorm paths.

Salts left on desertified surface may make it _____for commercial mining.

Sandstorms and dust storms reduce visibility . This will lead to _______ of outdoor activities.

There is very little ________cover in deserts because of low annual rainfall.

More people may suffer from ______________diseases and discomfort in the eyes.

Cover ______fields with dry straws to conserve water and nutrients and reduce erosion by wind.

_______ remedial measures such as planting grasses on bare fields can avoid desertification.

Taklimakan desert is a __________desert.

________rocks, mesas and sand dunes are common features.

As there are few relief ______on the way,huge amounts of sand can reach southern China.

Grasslands and shrubs cover the ________and mountain ranges in the west.

Plant less _________or practise crop rotation to allow enough time for fallowing.

A variety of vegetation,from grass and _____to forests.

Desertification ______the land and makes the soil too poor for crops to grow.

over-irrigation reduces crop yields and makes the soil poor. It also leads to ________.

Plant shelter belts know as the_________with fast -growing and drought-resistant trees.

To tackle desertification, people should have different___________.

Rainfall in desert region is usually ________

Most of the measures are voluntary and backed up by subsides or _________

Kalahari Desert in located in _______

In desert regions,there is very little or no cloud cover to block incoming _________

Sandstorms originated in deserts and ______ areas.

Sahara desert is a _________desert.

The climate of areas along the edge of deserts is _________.

The driest desert in the world is ___________

The main river system in North China in Huanghe River and its ____________.