Yes. Oxygen crash led to Cambrian mass extinction
Well there would no longer need plants to make air or take Carbon Dioxide, and the Carbon Dioxide would me our main meal
Sound waves are both compressional and longitudinal, (although we frequently draw them as transverse waves).
Longitudinal waves are where the particles of matter collide into one another, pushing them into the next and then oscillating back. This is how sound travels. This is also why sound can only travel through a medium, it cannot travel through a vacuum, as is shown here:
Nests, small organisms such as lizards, snakes, small birds, rock formations, skeletons of small animals.
Plant cells? maybe? i learned this last year
