1.) Neurons, they transmit nerve impulses<span>.
2.) </span>Neuroglial cells, non-conducting cells of the nervous tissue.
When testing a hypothesis, scientists use repeated trials and replication to make sure that they get the same answer each time, and that it isn't just a lucky guess the first time. They need be sure that the answer to their hypothesis is 100% the same every time.
Cell -> tissue -> organ -> organ system -> organism
Length of time candle burns is the correct answer.
What’s the rest of the question??
