Have a Dorsal Nerve Cord

question 71

Multiple Choice

have a dorsal nerve cord.

• A) Starfishes
• B) Bugs
• C) Sharks
• D) Earthworms
• E) Leeches

---

Definitions:

Applied Research

Investigations designed to tackle concrete challenges instead of just accumulating information for the sake of it.

Basic Research

Investigation and study conducted to increase fundamental knowledge and understanding of physical, chemical, or functional mechanisms, without immediate practical application.

Temporal Precedence

A principle in establishing causation indicating that the cause must occur before the effect.

Covariation

The measure of how much two variables change together, indicating the extent to which they are associated.