What problem can occur when the environment changes?

The correct choice highlights that changes in land characteristics, such as alterations in climate, soil quality, vegetation cover, or water availability, directly impact food resources and the survival of various organisms. For example, if an area experiences a drought, the types of plants that can survive may change, which in turn affects the animals that rely on those plants for food and habitat. Furthermore, each species has specific environmental requirements; thus, as habitats change, some organisms may thrive while others may struggle to survive or reproduce, leading to shifts in population dynamics and biodiversity.

In contrast, the assertion that all organisms adapt equally does not take into account the variety of responses different species have to environmental changes. Similarly, stating that only certain plants can grow simplifies the complexity of ecosystem interactions and does not encompass the broader implications of environmental change. The notion that animals will always migrate is also overly simplistic; not all species are capable of migration, and those that do may not always have suitable habitats to move to, limiting their ability to cope with environmental shifts. Therefore, the nuanced understanding of how ecosystem dynamics change with environmental factors is why the third option is most accurate.