Wow, thanks a lot!
Unfortunately, it seems that they don't have the textbook I'm looking for, but rather individual ones that focus on one topic, contrary to my desire.
Is there any textbook or any book (introductory, mostly) out there that combines the teaching of physics, biology, and chemistry phenomenon while appropriately teaching the details for each of the fields as it goes on. Or anything similar?
Since light has gravity, and there is an abundance of it in any given space (this is easily observable by being at anyone spot in space with objects around you), would it be possible to explain what 'dark matter' seems to be?