Answer:

1. Desertification- refers to the persistent degradation of dryland ecosystems by climatic variations and human activities. It occurs on all continents (except Antarctica) and affects the livelihoods of millions of people, including a large proportion of the poor in drylands. 2. Salinization- is a global environmental phenomenon that affects many different aspects of our life (Williams, 2001a, b): changing the chemical composition of natural water resources (lakes, rivers, and groundwater), degrading the quality of water supply to the domestic and agriculture sectors, contribution to loss of. 3. The ozone layer- or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. ... The ozone layer contains less than 10 parts per million of ozone, while the average ozone concentration in Earth's atmosphere as a whole is about 0.3 parts per million. 4.Saltation- is a form of transport for sediment in rivers. Small rocks or pebbles which are too big to be carried within the water are transported and bounce along the bottom of the river bed. Saltation. 5.A habitat- is a place where an organism makes its home. A habitat meets all the environmental conditions an organism needs to survive. ... The main components of a habitat are shelter, water, food, and space.

Explanation:

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