Coccolithophores and Foraminiferans Both Use ________ to Form Their Exoskeletons

question 15

Multiple Choice

Coccolithophores and foraminiferans both use ________ to form their exoskeletons.

• A) Si⁴⁺
• B) Fe³⁺
• C) Ca²⁺
• D) HPO₄⁻

---

Definitions:

Hidden Observer Theory

A concept in hypnosis positing that a separate consciousness is formed in an individual that is aware of all things during hypnosis.

Behavioral Theory

A theory that focuses on studying and modifying observable behavior through conditioning processes.

Hallucinogen

A substance causing alterations in perception, mood, and thought, typically inducing visions or hallucinations without external stimuli.

Painkiller

A drug or substance used to relieve pain, also known as an analgesic.