Microorganisms Likely Did Not Inhabit Earth's Surface Until

question 34

Multiple Choice

Microorganisms likely did not inhabit Earth's surface until

• A) aquatic life brought them onto land.
• B) the ozone layer was made.
• C) phototrophy evolved.
• D) chemoorganotrophy developed.

---

Definitions:

Organisation Structures

The hierarchical arrangement of lines of authority, communications, rights, and duties within a company that determines how roles, power, and responsibilities are assigned, controlled, and coordinated.

Decision-making Authority

The power or right delegated to an individual or group to make choices that will affect outcomes within an organization.

Centralised

A structural approach in organisations where decision-making authority is concentrated at the top levels of management.

Tetrapod

A tetrapod is a vertebrate with four limbs (or, like snakes, descended from vertebrates with four limbs). Living tetrapods include mammals, birds, reptiles, and amphibians.