Low infiltration capacity means that the soil cannot absorb much water per volume. The first step in erosion in a landscape dominated by low-infiltration capacity is the raindrop splash. This is where raindrops displace the soil from their original place because the soil cannot absorb adequate amounts of water.
By the time the bubbles rose to the surface of the ocean, the bubble model proposes that simple organic molecules had formed inside. The bubbles burst upon reaching the surface, releasing those molecules into the air.
I'm pretty sure that you are talking about mass.
