Nine-volt battery batteries were formerly made in this size. They had higher capacity than the then-standard carbon-zinc types, a nominal voltage of 8.4 volts, and very stable voltage. Once used in photographic and measuring instruments or long-life applications, they are no longer manufactured as mercury is highly toxic and accumulates in the ecosystem, posing a risk to humans and wildlife. Most battery voltage testers and chargers that can also test nine-volt need another snap clip to hold the battery, while cylindrical batteries often share a holder that may be adjustable in size. Because of the proximity of the positive and negative terminals
Toxic colonialism the idea of economic relief at a seemingly minor, but substantial environment cost. In some instances, monetary funds are not the only thing exchanged between developed and developing nations, “Somali warring parties used to accept hazardous and highly toxic wastes in exchange of army and ammunition”. This example is an indication of the separation between developed and developing nation and shows the lengths that not only developing nations are willing to extend to meet their needs, it also shows the desperation of developed nations to remove themselves from handling excessive toxic waste commitments. Over the past few decades there have