Domain of a function is the type of parameters it takes as input. The domain of a sine function is angle in either degrees or radians. The function that represents the population growth of the bacteria that is tripling every minute is given by the mathematical expression,
,
where, t is time in minutes,
is the initial population size, and
is the population at time, t.
The domain of this function will be time, t.
The answer regarding the components of an arthropod's nervous system would be item C. It consists of brain, nerve chord, and ganglia. The brain is located dorsally, while the nerve cord together with the ganglia is ventrally structured — extending on each segment of an arthropod’s body.
That's called evolution. I'm not sure exactly what it's asking, but I hope this helps you