An unlabeled hierarchical diagram of various astronomical bodies is shown below. The labels A, B, C, and can be used to represent the Milky Way, universe, planets, clusters, and stars. Part 1: Which four astronomical bodies would you choose to represent the four labels in the diagram?

Part 2: Justify your choice based on the hierarchical relationships in astronomical bodies.

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

Which of the following describes a situation where competition between producers exists

How does a sample of helium at 15 degree celsius compare to a sample of helium at 215 k? a) the helium at 15 degrees celsius has a higher average kinetic energy that the sample at 215 k. b) the helium at 15 degrees celsius has lower nuclear energy that the sample at 215 k. c) the helium at 15 degrees celsius has slower- moving atoms that the sample at 215 k. d) the helium at 15 degrees celsius has smaller atoms than the sample at 215 k.