Carbon-Based Residues Found in Rocks near Greenland Suggest That the First

question 11

Multiple Choice

Carbon-based residues found in rocks near Greenland suggest that the first life forms on Earth may have arisen ____.

• A)more than 3.8 billion years ago
• B)at the same time as the formation of Earth
• C)relatively recently - about 250,000,000 years ago
• D)about 10,000 years ago

---

Definitions:

Ideas

Concepts or mental representations of an object, situation, or set of information.

Variable Interval

A reinforcement schedule where a response is rewarded after an unpredictable amount of time has passed.

Assembly Line Manager

A professional in charge of supervising the production process in an assembly line, ensuring efficiency and quality in the manufacturing process.

Reinforcement Schedule

A plan or strategy in behavioral psychology involving the timing and frequency of rewards that influence the rate and retention of learning.