HELP PLEASE! What marks the transition between the Precambrian Eon and Phanerozoic Eon?

Question options:

a disappearance of most of the life in the fossil record

an increase in the number and diversity of life in the fossil record

the appearance of land plants in the fossil record

increased meteor impacts

Intelligence tests are often used to predict a person's future ability to perform in a school setting. alfred binet's initial purpose for developing intelligence testing was to aid students in getting the remedial they may have needed in elementary school. which of the following measures is the best criterion for evaluating the predictive validity of intelligence testing? act school attendance school grades sat job placement

What is the one of the two issues involving slavery in the constitution

Which of the following statements best describes the terms of the treaty of guadalupe-hidalgo? a the treaty ended the mexican-american war, resulting in the u.s. finally being able to finish building railroads in texas. b the treaty ended the mexican-american war, resulting in mexico and the u.s. going back to their pre-war conditions. c the treaty ended the mexican-american war, resulting in the u.s. facing a lot of international backlash for the war. d this treaty ended the mexican-american war, resulting in mexico ceding a large amount of land to the united states.