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Nature’s Big Changes: Helpful or Harmful?
Adaptive Reading Passage
Grade 4
English
Nature’s Big Changes: Helpful or Harmful?
Nature’s Big Changes: Helpful or Harmful?
Every living thing exists within an environment. This is the natural world where an organism lives, grows, and has constant interactions with its surroundings. Sometimes, the environment stays the same for a long time. Other times, a sudden transformation occurs. These changes can be beneficial to some living things while being quite harmful to others.
One major change is a forest fire. To many animals, a fire seems like an unfortunate disaster. The sudden destruction of trees means that birds and squirrels lose their nesting spots. However, a fire also starts a process of reconstruction. The intense heat helps certain pinecones open up so they can release their seeds into the soil. After the fire, the ground is covered in nutrient-rich ash. This allows a multitude of new, green plants to grow quickly. While the fire was harmful to the old trees, it was helpful for the small plants and the deer that eat them.
Another example of change comes from the construction of a beaver dam. When beavers build a dam using sticks and mud, they change the flow of a river. This often leads to the disappearance of the dry land where certain plants and insects used to live. For those organisms, the change is a disruption to their lives. But for others, like frogs, turtles, and ducks, the new pond is a perfect adaptation of the land. The pond provides a safe, still-water home where they can hunt for food and hide from predators.
Human activity also changes the world around us. When people build large cities or roads, it can cause the relocation of wildlife. Some animals might struggle to find a new home, while others find ways to thrive in these new spaces.
Whether a change is caused by nature or by living things, it creates a new ecosystem. Every animal must find its own path to survival. What might be a difficult challenge for one creature is often a great opportunity for another. By looking at these patterns, we see that our world is constantly changing in ways that are both challenging and full of new life.