List the atmospheric layers, temperature, altitude and density of those layers, and a unique object found in those layers.

On the basis of chemical composition, the atmosphere is divided into: Homosphere and Hetarosphere.

Explanation:

Homosphere is extended upto 90kms and uniformity of chemical composition is found here. The Homosphere is further divided into Three thermal layers:

i) Troposphere: Lowest layer of the atmosphere, extended up to 16 km at the equator,  All weather Phenomenon are restricted to this layer.

ii) Stratosphere: extended up to 25-30 km , where 50 km is upper limit. temperature becomes 0 degree C at 50 km, Circulation of Feable winds and cirrus cloud is found here, Ozone layer is found in this layer. Aeroplans fly in this layer.

iii) Mesosphere: Extends up to 50-80 km, Temperature decreases with height.

Hetarosphere is also consist of three layers:

i) Thermosphere: 80 km above the mesosphere, density is extremely low.

ii) ionosphere: extends between 80-640 km, radio waves travels through this layer.

iii) Exosphere: between 640 km, Density becomes extremely low.

true is the

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus