Natural selection is considered the mechanism of evolution. What are the 4 essential components of natural selection and how are these components related to the forces of evolution (i. e., mutation, migration drift and selection)?

the right side of the picture going down is:

polymerase

protein

transport vesicle

modified protein

the left side of the picture going down is:

dna helix

single-stranded rna

endoplasmic reticulum

ribosome

golgi apparatus

protein released from vesicle

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a. the production of carbon dioxide through the process of photosynthesis