Question

Q2 GIVE REASONS FOR THE FOLLOWING 5
a. Human activities are responsible for soil erosion.
b. Wind action leads to soil erosion.
c. Global warming is an international concern.
d. The atmosphere is necessary for human survival.
e. Jet planes leave a trail behind as it moves.

Answer 1

1. Soil erosion occurs naturally by wind or harsh climatic conditions but human activities include overgrazing, overcropping and deforestation. Overgrazing occurs when farmers stock too many animals such as sheep, cattle or goats on their land. Even Construction of roads and buildings, logging, mining, and agricultural production have resulted in large amounts of soil erosion.
2. Wind erosion is a natural process that moves soil from one location to another by wind power. Wind erosion can be caused by a light wind that rolls soil particles along the surface through to a strong wind that lifts a large volume of soil particles into the air to create dust storms.
3. -
4. Atmosphere is essential for life because it has oxygen and other useful gases which humans need for their survival. It has most of the ozone present in the atmosphere.
5. Jets leave white trails, or contrails, in their wakes for the same reason you can sometimes see your breath. The hot, humid exhaust from jet engines mixes with the atmosphere, which at high altitude is of much lower vapor pressure and temperature than the exhaust gas.