Question

adaptive radiation
extinction events led to further changes in the biosphere. after a mass extinction event, an enormous number
of ecological niches can be filled by new species through adaptive radiation.

• adaptive radiation occurs when a species

________ ________ in response to a change in
its environment, such as new __________ becoming
available, new __________, or new environmental
niches.

• when species disappear, they leave behind unoccupied

________ ________, such as food sources,
________, or methods of ________.
the beaks of galapagos island finches
likely evolved through adaptive radiation
enabling them to eat different food.

Explanation:

Adaptive radiation is a biological concept. When a species undergoes adaptive radiation, it diversifies. This can be due to changes in the environment like new resources (e.g., food), new predators (which create a need for different survival strategies), or new ecological niches. When species go extinct, they leave behind unoccupied ecological resources. These can include specific food sources (a type of resource), habitats (where the species lived), or methods of reproduction (a way the species perpetuated itself). The Galapagos finches' beak evolution is a classic example of adaptive radiation as different beak shapes allowed them to exploit different food sources.

Answer:

diversifies; resources; predators; ecological resources; habitats; reproduction