Which of the following is an example of how plants and animals can change their environment to meet their needs?

Bird nests and tree roots breaking concrete illustrate how plants and animals modify their environment to fulfill their needs. Birds construct nests using materials they find in their surroundings, effectively altering the structure of trees or buildings to create a suitable habitat for raising their young. Similarly, tree roots can exert pressure on hard surfaces like concrete as they grow, leading to cracks and upheavals that can change the local environment. This ability to modify habitats is crucial for survival, as it allows organisms to create safe spaces for nesting, find resources, and enhance their living conditions.

In contrast, the other options do not represent direct changes made by plants or animals: erosion is a natural process that reshapes rocks over time without animal or plant intervention. Changes in water levels or wind patterns are influenced by broader environmental factors such as climate and weather rather than actions taken by specific organisms. Thus, option A stands out as the literal and intentional adaptation made by living organisms to create an environment that supports their needs.