Can absolute adaptations to the environment exist?

Can absolute adaptations to the environment exist? What will happen to the body and its adaptation when the environmental conditions change?

absolute adaptation to environmental conditions does not exist and, most likely, cannot exist, due to the variability of the environment itself. an example is animals that have evolved, for example, from mammoths to elephants, as the environment has changed.
the second question is already answered in the sentence above: the organism will evolve, thereby adapting to new conditions of existence.

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