Which of the following is true about scientific theories? i. new research is often done to learn more about existing scientific theories. ii. scientific theories can be revised, changed, or even rejected. iii. scientific theories are considered to be facts and cannot ever be modified. iv. new scientific theories can be formed to explain new phenomena.

Which two island are closest to the mainland asia

The modern united kingdom and france, by virtue of most government power being held by the central, national government, are best described as having which form of government? select one: a. definitive b. federal c. unitary d. confederal

43. based on what you know about constitutional provisions regarding individual voting rights, which of the following is true? a the constitution places no restriction on the states' power to set voting qualifications. b. the constitution places eight federal restrictions on the states' power to set voting qualifications. c. the federal government cannot restrict the states' power to set voting qualifications except for matters of age and race. d. the constitution places five federal restrictions on the states' power to set voting qualifications.