Autism is a disability that results from a disorder in the central nervous system. it has been speculated that the increasing number of cases of autism in recent years due to the increase in the number of vaccinations given to young children What is the Independent variable and dependent variable.

Write a hypothesis to test this speculation in proper format...

Independent variable: whether a vaccination was given to a young individual (at a set age)

Dependent variable: (what you measure) would be whether the child has autism (yes or no answer) or whether they are on the spectrum.

The hypothesis would be based on your opinion but would be an if...then... statement. E.g. if the child is given a vaccination then there will be no effect whether they have autism

The speed of  sound:   sound travels  at different speeds depending on what it istraveling through. of the three mediums (gas, liquid, and solid)  sound waves travel the slowest through  gases, faster  through  liquids, and fastest  through  solids.