When people change the places where animals live, like cutting down trees or building roads, it can make it hard for animals to find food and have babies. This means there might be fewer animals in the world, and some kinds might even disappear forever.
The Dust Bowl was a period of severe dust storms that greatly damaged the ecology and agriculture of the American and Canadian prairies during the 1930s. It was caused by a combination of drought, poor farming practices, and economic depression, leading to massive soil erosion and forcing many families to abandon their farms.