After battle of lexington and concord who was president

Which features are created on the exterior of a volcano when it erupts? check all that apply. vent crater hot spot lava flow boundary

Government run farms are known as a. pastoral b. collectives c. irrigation d. dalits

Which statement is a good description of a model? a) models are a description of nature based only on one or two variables. b) models are testable ideas but they are not very to most people. c) models are a description of nature that predicts more accurately than real events. d) models are an approximiation of a real system that omits all but most essential variables in a system.