How do you know the speed of an electromagnetic wave of a vaccum

Time ! for a smell to begin the process of registering in your brain, first you must a) inhale odor molecules into the nasal cavity b)transduce scent chemicals c)have a scent to inhale d)all answers can work

What enzyme is most important for dna replication and why?

The law of states that traits are passed from parents to offspring independently of one another.. true or false