Answer:
Photosynthesis is the process plants use to make food. Plants can't get out of the ground and go get Chinese food from a restaurant or cook a burger so, they have to make their own food using photosynthesis.
I will now go over the "ingredients" of the process
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1. Sunlight
2. Oxygen (a.k.a O2)
3. Sugar (otherwise known as glucose)
4. Water
5. Carbon Dioxide
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Think of it as a little factory that specializing in making food for plants or a "plant food diner" or sorts.
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You can find LOTS of diagraphs of it online. Some of them are simple and some are more complex. Whatever works for you is what you should study with. I recommend practicing some examples to get more familiar with the topic.
Explanation:
If you need more of an explanation, feel free to ask me more. I hope this helps!
*I tried to put a few pictures but it only let me put one.