the scarcity of water to feed the growing population.
What is the greatest environmental challenge facing North Africa?
A great deal of the environmental concerns in the North African region is desertification and soil erosion. Water pollution is another big issue considering the lack of water in the desert regions. Desertification can occur by the spread of sand dunes and soil compaction, usually caused by overuse and over-farming.
What environmental challenges does irrigation pose in North Africa?
The expansion and intensification of agriculture made possible by irrigation has the potential for causing: increased erosion; pollution of surface water and groundwater from agricultural biocides; deterioration of water quality; increased nutrient levels in the irrigation and drainage water resulting in algal blooms, …
Which is a negative effect of tourism in North Africa *?
Which is a negative effect of tourism in North Africa? It requires large quantities of water for swimming pools, hotels, and golf courses. Which statement about the environmental impact of regional oil and petroleum industries is true?
Why do some countries in North Africa import most of their food needs?
Why do some countries in North Africa import most of their food needs? Water scarcity makes it impossible to grow enough food for the population. … Increased trade encourages overfishing, which endangers fish populations.
What are the two main climate types in North Africa?
As Figure 1 shows, the semiarid and desert climate zones dominate, and most of North Africa is very dry.
What is North Africa Climate mostly like?
North Africa has an arid desert climate, with high temperatures and very little precipitation (although temperatures in the mountains and the Sahara at nighttime can drop below freezing). … Instead of spring, summer, fall, and winter, most countries south of the Sahara Desert have dry and rainy seasons.
What are the negative effects of irrigation?
Waterlogging and salinity frequently result from poor irrigation management while the higher levels of inputs associated with irrigated agriculture result in fertilizer and pesticide runoff. At the same time, irrigation induced increases in yield and cropping intensity reduce pressures to develop yet more land.
What are 3 major concerns that relate to human impact in North Africa?
Sea Level Rise, Droughts and Floods
Droughts and floods are the most common climatic events in North Africa and represent direct threats to lives, livelihoods and socio-economic aspects.
What are the positive and negative effects of irrigation?
The effects may be water mining, land/soil subsidence, and, along the coast, saltwater intrusion. Irrigation projects can have large benefits, but the negative side effects are often overlooked. The lower the irrigation efficiency, the higher are the losses.
What is the most dominant physical feature landform of North Africa?
The SAHARA DESERT, the dominant feature of the North African landscape, sweeps across the southern part of the region. The Sahara serves as a geographical boundary between North Africa and sub-Saharan Africa, except in Egypt.
Does the positive impacts of tourism outweigh the negative impacts?
There are more job opportunities as many people are involved in tourism industry both directly and indirectly,serving as tourist guide,taxi driver and so on. … Therefore,the development in tourism bring more positive economic affluence than negative impact.
Why is clean water so vital to North Africa?
Terms in this set (12) Clean water a vital necessity for food production, but it is a scarcity in most regions because pollution and a general lack of water. … An aquifer is underground water bearing layers of porous rock, sand, or gravel. Aquifers can become contaminated by increased salinity.
How much of Africa’s food is imported?
From 2016 to 2018, Africa imported about 85% of its food from outside the continent, leading to an annual food import bill of $35 billion, which is forecast to reach $110 billion by 2025. This heavy reliance on world markets is detrimental to food security, especially at a time of acute crisis.
What does Africa import the most?
In 2018, Africa’s total imports were worth approximately 549 billion USD. The largest imported product (using the 4-digit category) was petroleum and mineral oils which was valued at approximately 60 billion USD – that is 11% of Africa’s total imports in that year.
Does Africa import more food than it exports?
Africa’s agricultural exports are rising too.
While SSA imports much more food today than it did two decades ago, it exports much more too (Figure 2). Indeed, the region imported roughly $40 billion per year over the past four years while it exported roughly $35 billion.