d. Eras are divided into periods; periods are divided into epochs.
The geologic time is divided from the largest defined unit of time called supereon, which is composed of eons. Eons are further subdivided into eras, periods, epochs and the smallest unit of time - ages.
Answer: Because water is capable of dissolving a variation of different substances
Explanation:
Water conservation involves protecting the animals
You gotta give us the statements
The lumbar nerves exit the intervertebral foramen under the pedicle of the same numbered vertebral body.
lumbar sacral: intervertebral
coccygeal: vertebral