the following what anyways it means the formation of a number of things into a cluster. i hope it helped
The cell theory of course had an important impact on later scientific discoveries as many different hypothesis and scientific discoveries were derived and concluded with the help of basics from this theory.
B. comet
comets only have tails because the sun is shining its light on the ice and dust behind the comet
The controlled variable is what stays the same . So it’s C . They are given different amounts but the same food.