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However, when these commercial varieties turn green, even they can approach solanine concentrations of 1000 mg/kg (1000 ppmw). The U.S. National Toxicology Program suggests that the average American consume no more than 12.5 mg/day of solanine from potatoes (the toxic dose is several times this, depending on body weight).
Mountain pine beetles can damage whole regions of forest. Mountain pine beetles affect pine trees by laying eggs under the bark. The beetles introduce blue stain fungus into the sapwood that prevents the tree from repelling and killing the attacking beetles with tree pitch flow. The fungus also blocks water and nutrient transport within the tree.
Bald cypress trees growing in swamps have a peculiarity of growth called cypress knees. These are woody projections from the root system project above the ground or water. Their function was once thought to be to provide oxygen to the roots, which grow in the low dissolved oxygen waters typical of a swamp (as in mangroves). However, evidence ...
Trees can be girdled by climbing, twining, and ground-creeping (rampant) vines. There are several invasive species that harm trees in this way and cause significant damage to forest canopy and the health of ecosystems dependent on it. Oriental Bittersweet, Oriental Wisteria, and English Ivy all can damage and kill trees by girdling. [citation ...
Implementing this negates any way, foreseen or unforeseen, that a normal user may come to infect the operating system with a virus [citation needed]; however, it also requires that users switch to an administrative account to carry out administrative tasks, thus creating a different set of threats on the tree and more operational overhead. Also ...
Here are 10 weird things that can kill you almost instantly. Number 10.A meteor. Humans have been lucky when it comes to avoiding sizeable meteors and mass die-offs. ... The probable effect has ...
Just like other operating systems, Windows has the option to prohibit selected users from shutting down a computer. On a home PC, every user may have the shutdown option, but in computers on large networks (such as Active Directory), an administrator can revoke the access rights of selected users to shut down a Windows computer. Nowadays there ...
It's important to keep your guard up, everything from vending machines to mini-golf have caused unfortunate and deadly accidents. Beware of these unassuming dangers! More in strange: 9 unusual ...