Nerium oleander /ËnÉªÉriÉm ËoÊliË.Ã¦ndÉr/[3] is a shrub or small tree in the dogbane family Apocynaceae, toxic in all its parts. It is the only species currently classified in the genus Nerium.
Troposphere. The troposphere (from Greek: tropein-to change, circulate or mix) is the lowermost layer of the Earth's atmosphere. Most of the weather phenomena, systems, convection, turbulence and clouds occur in this layer, although some may extend into the lower portion of the stratosphere.emperature and water vapor content in the troposphere decrease rapidly with altitude and thus most of the water vapour in the troposphere is concentrated in the lower, warmer zone. Water vapor concentrations vary with latitude.
The troposphere is the lowest part of the atmosphere of the Earth. It is shallower near the polar regions and is denser in the tropics. Observable day-to-day weather phenomenoâ¦n occur here. The temperature of the troposphere decreases with increase in height and hence water vapour content decreases with height. An imaginary line at the boundary of the troposphere and the stratosphere is known as tropopause. The troposphere constitutes 80% of the total mass of the atmosphere and almost all of the water vapour and atmospheric particulate matter are concentrated in this layer.