TEACHNEW THINGS
The sky is blue because it's a reflection of water and light and the Rayleigh scattering of light on the water molecules. Likewise, a thick layer of water has a blue color because water absorbs red light (with a wavelength around 750 nm), it makes the blue sky.
Chatbot is a computer program that holds conversations with people and is created through programming programs on your computer and the server still and mechanical equipment. (Machine learning)
COMPUTER Delan used for quick calculations also for communication, entertainment, INTERNET AND LEARNING THINGS from the net. ETC.
Water is good for life for all people without it can not live H2O brand has it's transparent chemical compound. Water also falls like rain from the sky during evaporation from the heat in the state and that water in liquid and gaseous state in the terrestrial environment almost constantly moving and changing their state more latent heat and a water cycle
Water vapor and tiny water droplets in the clouds then in the air by moving air masses caused by the uneven heating of air over land and oceans and the earth's rotation, constantly relocating (atmospheric circulation