On average how much rainfall do deserts receive each year?
More than 250 mm
Less than 250 mm
250 mm
What is the temperature range of deserts in the summer season?
35-40°C
40-50°C
40-45°C
Generally, what colour are desert soils?
Yellow
Grey
Orange
What is the name given to plants which have adapted to hot and dry conditions?
Epiphyte
Saprophyte
Xerophytic
How long are tap roots?
5-7 metres long
10 - 15 metres long
7-10 metres long
Where do succulents store water?
In the fruits and roots
In the stems, leaves, roots and fruits
In the stems and leaves
What crops are commercially farmed in the desert?
Cotton and wheat
Wheat and barley
Barley and cotton
What is desertification?
The process of land turning into desert as the quality of the soil declines over time
The process of land losing vegetation
The process of land losing nutrients
What are the main causes of desertification?
Population growth and removal of wood
Population growth, removal of wood, soil erosion, overgrazing and climate change
Climate change and soil erosion
What strategies can reduce desertification?
Planting trees
Improving soil quality
Planting trees, improving soil quality and water management