A Locust Invasion in the Deserts of Peru
In A Locust Invasion in the Deserts of Peru, narrator Sir David Attenborough describes how sudden rains bring life to the otherwise arid deserts of Peru, creating a burst of vegetation. Swarms of locusts take advantage of this new growth, consuming the vegetation and causing a dramatic impact on the desert ecosystem. This video is excerpted from BBC’s Planet Earth II, a breathtaking documentary series that highlights the natural wonders of our planet.
Lesson Express
Q: What role do locusts play in the desert ecosystem after rainfall?
A: Locusts take advantage of the new plants that grow after it rains, swarming in large numbers and eating much of the fresh vegetation. This can affect other animals that depend on the same plants for food.
Q: How does the desert environment change when it experiences rainfall?
A: Rain causes the desert plants to grow quickly, leading to a burst of life in the area. However, this new growth also creates competition among animals and plants, which can disrupt the balance of the ecosystem.
Q: What might happen if locust swarms become too large?
A: If locusts swarm in very large numbers, they could eat too much vegetation, leaving less food for other animals. This could cause a food shortage and disrupt the entire desert ecosystem.
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