We use it by consuming our food, walking around, digesting our food, its what is able to cause us to be living.
Answer:
The science of biology explains the origin and persistence of life, and studies the changes in living things
Explanation:
Vestigial traits are adaptations to environmental pressures which are no longer present.
homologous structures are similar structures found in different species that were present in a common ancestor.
analogous traits are similar traits found in different species that were developed independently (this process is known as convergent evolution)