Potassium is another one of those reactive elements. It’s often used to create some pretty spectacular explosions. Termites are usually harmful to trees and also to wooden houses. So much, so that homes in termite-prone areas are made of aluminum or steel to stop them from destroying them.
Dugongs are one of my favorite animals. They are closely related to dolphins. They are herbivores and mostly eat seagrasses in tropical and semi-tropical waters. They are often quite slow but can make quick escaped from predators if need be. They are an indicator species, and their mas death usually indicates problems with the environment.
Calcium is a unique little element, often associated with bones as it makes up a considerable amount of bones and shells. It is also an indicator of problems with the environment of their is to much or too little for the soil type. It’s also something to watch out for in a nuclear fallout as radioactive calcium is often present in the weeks after a human-made atomic explosion. Its presence in the environment will mean it attaches to our bones and potentially causes cancer.