The overall goal of photosynthesis to enrich CO2 with electrons to create chemical potential energy. These electrons are taken from H20 in the first step of the light reactions. Demonstrate your comprehensive knowledge on this subject by explaining how the electrons are taken from H2O and added to CO2. Use your knowledge of biochemistry and redox chemistry to explain which molecules are oxidized and reduced at each step of the process.

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the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.

is it multiple choice?