Which microbial virulence factor is most important for attachment to host respiratory tissues?
adhesins
lipopolysaccharide
hyaluronidase
capsules

The correct answer is option - adhesins.

Explanation:

Appendages of bacteria or microbial virulence factor adhesins that help in adhesion or attachment to host cells or surfaces of hosts. These are essential microbial virulence factors to bind with the host respiratory tissues.

bronchitis, pneumonia and other microbes cause respiratory infection and for this adherence is the most essential step that is regulated by adhesins.

Thus, the correct answer is adhesins.

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a