Which Statement About the Cambrian Is True

question 6

Multiple Choice

Which statement about the Cambrian is true?

• A) The Burgess Shale is a Cambrian fossil bed.
• B) The first multicellular life occurred during the Cambrian.
• C) It marks the end of the Paleozoic era.
• D) Oxygen concentrations were much lower during the Cambrian than they are today.
• E) It came after the Ordovician.

---

Definitions:

Psychic Birth

refers to a psychoanalytic concept describing the moment or process through which an individual begins to form a separate, independent identity from their primary caregiver, often associated with early childhood development.

Ego

In psychoanalysis, part of the psychic apparatus that mediates between the desires of the id and the morals of the superego, often associated with conscious identity.

Puberty

The period of sexual maturation, where a child's body transitions into an adult body capable of reproduction.

Realization

The act of becoming fully aware of something as a fact, often leading to an understanding or acknowledgment of a situation.