This is fairly recent bird lore. Like late 80s to 90s. It takes a while for schools to catch up so I missed it as well.

Obsidian forms when lava cools very rapidly, limiting crystal growth. The lava pictured above most likely cooled slowly.

This guy hasn’t bought ammo recently.

It gets cold.

There is a physical limit. You need photons to hit a sensor. Professional cameras use huge lenses to condense photons on to large sensors. Phones need tiny lenses and even tinier sensors.

Why does Napoleon sound like he was born in San Bernardino?

I believe the OP was asking why the cop isn’t worried about spraying themselves in the face. Pepper spray has a habit of getting everywhere.