Which Group of Protostomes Accounts for More Than Half of All

question 8

Multiple Choice

Which group of protostomes accounts for more than half of all known species of living organisms?

• A) Insects
• B) Arachnids
• C) Crustaceans
• D) Horsehair worms
• E) Cephalopods

---

Definitions:

Conservation Cost

The expenses associated with the actions taken to preserve natural resources or to minimize environmental impact.

Nonrenewable Resource

A natural resource that cannot be replenished or regenerated at the same rate at which it is consumed, such as oil, natural gas, and minerals.

Ethanol

A renewable fuel made from various plant materials collectively known as "biomass."

Economically Viable

A situation or project that is financially sustainable, able to generate revenue that exceeds its operating costs.