Figuer:
Examine this image, showing an electron transport chain in photosynthesis. 
-The electrons flowing through the electron transport chains in photosynthesis come from ____ and end up being carried by _____.
Definitions:
Steel Bar
A long piece of metal that is typically used in construction and manufacturing due to its strength and durability.
Watson And Rayner
are known for their 1920 experiment on classical conditioning with "Little Albert," demonstrating that emotional responses could be conditioned.
Conditioned Emotional Response
A learned emotional reaction or response to a previously neutral stimulus that has acquired its emotional value through classical conditioning.
Learning Of Phobias
The process by which individuals develop irrational fears through classical conditioning or traumatic experiences.
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