human biology scientific method project Step 1: Observe and Generalize ----common cold example hand washing name two more Observe different characteristics related to your topic of question, and then generalize about it. Take into consideration what is already known on the subject, varying opinions, past mistakes, and new aspects that you may have not foreseen. Summarize: Observation 1: Observation 2: Observation 3: Solution Answer: Observation 1: Common cold is caused by bacterial or viral infection and transmitted from one person to other through droplets from infected person. The person infected with common cold show protect his nose or mouth with steril mask, which covers mouth and nose. If nose or mouth is not covered by mask, droplets can transmit common cold to many people in surrounding environment. Observation 2: Common cold is widely transmitted very easily, if a person infected with common cold and he sneezes in public places which is having high population, several thousands of droplets can be transported through air at onetime, when person sneezes, so avoid moving in public places when common cold is rampant in specific area. Observation 3: Doctors who examine the persons suffering with common cold should be careful, the physician should use antibiotics or vaccines to prevent common cold infection..