Why Salt kills earthworms?
A lot of us have become used to using salt to kill earthworms when we encounter any in our houses. I've thought about this for a while now, but I recently decided to check it up and I'll share what I learnt about the science. Before that, I'll share some points about earthworms: - They are in the lumbricus genus, there are various species of earthworms, but the common earthworm's scientific name is lumbricus terrestris - Their digestive system runs through the length of their skin - Earthworms respire through their skin - They are hermaphrodites (each one carries both male and female sex organs) - They lack either an internal skeleton or exoskeleton , but maintain their structure with fluid-filled coelom chambers that function as a hydrostatic skeleton. Okay, let's talk about salt and earthworms: Earthworms respire and secrete mucus through their skins. Salt (sodium chloride) has the ability of absorbing moisture (desiccant). When a large quantity of salt i...
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