Answer:
I believe, The rock is a minimum of 1.5 million years old but it may be older
Explanation:
Gradpoint
An artificial leaf could replicate photosynthesis but instead it would also be artificial which then produces hydrogen fuel that will be energy efficient and carbon neutral. hope this helps.
I think electric but im not sure tho.....
Chloroplast is a part of a plant cells it contains chlorophyll and in where photosynthesis takes place.