According to Observations,what Type of Galaxy Was Much More Common

question 57

Multiple Choice

According to observations,what type of galaxy was much more common when the universe was 2 billion years old?

• A)elliptical galaxies
• B)spiral galaxies
• C)irregular galaxies
• D)We can't say,because we are living at a time when the universe is 14 billion years old,not 2 billion years.

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Definitions:

Non-associative Learning

A form of learning characterized by a change in response to a stimulus due to repeated exposure, without the need for association with a different stimulus.

Observational Learning

The acquisition or modification of a behavior after exposure to at least one performance of that behavior.

Operant Conditioning

A training technique that adjusts the potency of a conduct via positive reinforcement or disciplinary measures.

Classical Conditioning

A type of learned response in which a neutral object comes to elicit a response when it is associated with a stimulus that already produces a response.