1st Generation Pesticides: 1  2500 BC- farmers began using the toxic chemical sulfur to kill off pests from their crops. 2  15th century AD -a variety of chemicals such as, arsenic, hydrogen cyanide, mercury and lead were put to use. 17th century -nicotine sulfate, derived from tobacco leaves was discovered as an effective pesticide and ants were controlled with mixtures of honey and arsenic.
Cell phones communicate with nearby cell towers mainly through radiofrequency (RF) waves, a form of energy in the electromagnetic spectrum between FM radio waves and microwaves. Like FM radio waves, microwaves, visible light, and heat, they are forms of non-ionizing radiation.
Waves is a custom tokens blockchain platform, and the first production cryptocurrency system to be built in Scala. It uses an inflation-less PoS consensus with a fixed supply of 100 million WAVES tokens, which are the fuel for every activity on the platform. Waves was crowdfunded with 29,634 BTC. 85 million WAVES were distributed after the ICO, with the rest being used for bounties, partnerships, and held in reserve as an additional development fund. Custom tokens