Why Do Worms Come Out In The Rain
Camila Farah
Another theory explaining this distinct behavior of earthworms is that rainwater can cause the soil to become more acidic which is fatal for the species.
When it rains worms sometimes leave their home in the soil and wiggle their way up to the surface where we see them on sidewalks and roads. According to sherman worms emerge when it rains in order to enter a more moist environment which allows them to take in more oxygen. Coincidentally entering a moist environment with a lot of. There is a big chance that they can establish colonies in other areas at this time.
The truth about drowning worms conventional wisdom holds that earthworms head to the surface after rain because they can t breathe. Most claim that worm trails and air pockets underground become submerged and the earthworms can t breathe. Normally soil has a mix of air and water about 50 percent of the pore space in soil is air the rest is water. Earthworms often come to the surface to escape moles.
Still scientists have some interesting theories about it. Another explanation involves rain drop vibrations on the soil surface sounding similar to predator vibrations like that of moles. Some scientists believe that megadriles come out in the rain because there are less predators present. In fact this is not true.
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Worms come to the surface to move around but exactly why they do it or where they are headed remains a bit of a mystery. Normally as you have observed coming above ground in the day means. Worms breathe through gas exchange absorbing oxygen directly through their skins. On top of the wet ground the worm can breathe and wriggle along.
An earthworm breathes oxygen by absorbing it through its moist skin. The answer to this question is not what you may think. When the worms are in the ground the rain can saturate the ground and they end up drowning so they come up to the surface. It likes damp soil but if the rain is very heavy the oxygen in the water logged soil may run out.
In fact because they require moisture to breathe through the skin worms can survive underwater for several days.
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