Temperatures climb sharply in the lower (below 200 to 300 km altitude), then level off and hold fairly steady with increasing altitude above that height. solar activity strongly influences temperature in this layer of earths atmosphere.

Temperatures climb sharply in the lower thermosphere

Explanation:

The thermosphere is the most extensive atmospheric layer, reaching up to 500 km in height. In the thermosphere, air is scarce and therefore easily absorbs solar radiation, called atomic oxygen, a type of gas that absorbs solar energy in large quantities. Its temperature can reach up to 1,000 ° C, being the warmest layer in the atmosphere.

In the thermosphere the temperature increases with the altitude being located above the mesopause, its temperature increases with the rapid altitude until the density of the molecules is so small that they move in such random paths that they rarely collide.

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