So we can tell how many times a heart beats per second
Answer: Alluvial Fan!
Explanation:
Alluvial is a rich soil that is great for growing plants therefore you should grow crops there
Olfaction is not a tactile sensation, nor it's related to chewing food.
Olfactory receptors are chemical receptors in the nasal cavity that react with different odors creating the sense of smell that is interpreted in the brain.
So, olfaction is a chemical sensation that we experience while inhaling different odors through our noses.