1. <span>They all have endoskeletons.
2.</span><span>They have brains protected by skulls.
3.</span><span>They have closed circulatory systems.</span>
A mucociliary blanket to remove contaminants, secretion of lysozyme and other antimicrobial chemicals, and alveolar macrophages helps protect against airborne diseases.
Respiratory aerosols spread airborne infectious disease within infected individuals and between the infected individuals and their environment
Airborne diseases are caused by pathogenic microbes small enough to be discharged from an infected person via coughing, sneezing, laughing and close personal contact or aerosolization of the microbe. The discharged microbes remain suspended in the air on dust particles, respiratory and water droplets.
Some of the common pathogens that may spread via airborne transmission are:
Anthrax.
Aspergillosis.
Blastomycosis.
Chickenpox.
Adenovirus.
Enteroviruses.
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Answer;
-the scientific fields, medical fields, or technical fields
Explanation;
-There are two main systems of measurement in the world: the Metric system and the US standard system.
-The Metric (or Decimal) system is made of units based on powers of 10. To convert units, one needs to move the decimal point.The prefix (beginning part of the word- i.e. kilo or milli) describes the size of the given unit.
