Briefly describe the three different ways of measuring the mass of a cluster of galaxies. do the results from the different methods agree? what do they tell us about dark matter in galaxy clusters?

the arctic is a region of the planet, north of the arctic circle, and includes the arctic ocean, greenland, baffin island, other smaller northern islands, and the far northern parts of europe, russia (siberia), alaska and canada.

depends on what you mean by "group." for order, it would be coleoptera (beetles). for class, it would be insecta (insects). for phylum, it would be the arthropoda (animals with jointed exoskeletons).

explanation:

technology is the application of the knowledge gained by science.

answercollision;