I would go with D, speaker. A poem is written by an author, but the author isn't always the speaker.
Its found in the tectum of the dorsal aspect of the midbrain
Ingested nutrients spend at least 12 hours in the small intestine as chemical digestion and absorption are completed.
If u are specificly talking about water in the air space of the leaf going out into the atm , than that's called simple diffusion .
