In class, we are observing an experiment conducted by CH students. They wanted to answer the question, "What is the effect of light on producers?". What is the independent variable in this experiment?

True or false, the three major scales used to measure earthquakes are mercalli scale, richter scale and magnitude scale

The boiling point of liquids is very high what does it indicate

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.