To make this comparison, astronomers use a diagram (the colour-magnitude diagram) that plots the temperatures of the stars against their luminosities. Colour-magnitude diagrams have been obtained for more than 1,000 open clusters, and ages are thus known for this large sample. Because open ...
A comparison of the structure and function of nematocysts in free-living and parasitic cnidarians (Myxozoa). Int. J. Parasitol. 2020, 50, 763–769. [Google Scholar] [CrossRef] [PubMed] Lewis Ames, C. Medusa: A review of an ancient cnidarian body form. Results Probl. Cell Differ. 2018...