How long does it take a ray of light to travel from the Sun to Earth? A. 2 hours
B. 8 minutes
C. 2 years
D. 30 minutes

What is the correct equation for cellular respiration?

In a ball-and-stick molecular model, what do the sticks represent?

Select the correct answer from each drop-down menu. to make a table of the elements, dmitri mendeleev sorted the elements according to their . he then split the list of elements into several columns so that elements beside each other had similar .