Based on Fossil Evidence,eukaryotes Evolved About _____ Years Ago

question 40

Multiple Choice

Based on fossil evidence,eukaryotes evolved about _____ years ago.

• A) 500,000
• B) 1.5 billion
• C) 2.1 billion
• D) 3.5 billion

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Definitions:

In Vivo Exposure

A behavioral therapy technique that involves exposing the patient to the actual anxiety-producing stimuli, rather than imagining the scenario, to help overcome fears or undesirable behaviors.

Operant Conditioning

A method of learning that employs rewards and punishments for behavior, emphasizing the idea that behaviors followed by positive outcomes are more likely to recur.

Intermittently Reinforced

A conditioning schedule where responses are sometimes rewarded, strengthening behavior unpredictably.

Continuously Reinforced

In operant conditioning, a scenario where each instance of a desired behavior is reinforced (rewarded), leading to rapid learning.