What are the threadlike structures that hold all of the galaxy superclusters together?

Which best explains why england had the highest standard of living in the world in 1990? a.england started industrializing before the rest of the world b.england had the highest population in the world. c.england hadthe most fertile soil in the world. dengland had more natural resources.

Ray lo bisects nlm, lm=18, no=4, and ln=10. what is the value of x?

During which era in earth's history were the first insects? mesozoic precambrian cenozoic paleozoic