PLEASE HELP !! Please define the following vocabulary terms on Federal Courts jurisdiction.
dual court system-
jurisdiction-
exclusive jurisdiction-
concurrent jurisdiction-
presume-

An object weighs 40n in air , weighs 20n when submerged jn water and 30n submerged in a liquid of unknown density .what is the density of the liquid?

Historical vs today's presidents (compare)

Which of the following discoveries would be most likely to cause a scientific paradigm shift? a. the discovery of more rings around uranus b. the discovery of a new pathogenic virus transmitted by mosquitoes c. the discovery that a dormant volcano is showing signs of activity d. the discovery of a new species of salamander in the amazon rainforest e. the discovery that excess heat is radiating from the center of the earth and causing global climate change