Which of the Following Terms Describes All Organisms on Earth

question 55

Multiple Choice

Which of the following terms describes all organisms on Earth plus their environments?

• A) biosphere
• B) ecosystem
• C) habitat
• D) species

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Definitions:

Ivan Pavlov

A Russian physiologist known for his work on classical conditioning, demonstrating how organisms learn through association.

Unconditioned Response

A natural, automatic reaction to a stimulus that does not require learning to take place.

Unconditioned Stimulus

In classical conditioning, it refers to a stimulus that naturally triggers a response without any prior learning.

Discriminative Response

A behavioral response that differentiates between various stimuli, showing an ability to discern or discriminate between them.