I watched Fanfastic Fungi on Netflix, where they claimed that trees use the fungi network in the soil, under the trees, to send messages to each other. Calcium may be one of the messages, or a response to the message eg a response to a warning to fortify (calcify) itself.
I wouldn’t be surprised if it were true. The writers of the movie Avatar didn’t come up with talking trees out of no where.
They’ve only recently found that mycelia/fungus in the soil, take minerals from rocks and sand and give it to plants through their roots. We now know that a tablespoon of healthy soil has millions of microbes.
Science should spend a lot more time trying to figure out how this God created, life supporting planet works and less time trying to play God with things like CRISPR Cas9 gene editing.
Too bad scientists are taught the Big Bang Theory early, as if it’s a known fact. We’d be a lot further along if scientists were Creationists.