What is one negative impact of man-made topographic features?

If an atom has 35 protons in the uncles , how many elements will it have orbiting the nucleus

Countries that are neither core nations nor peripheral nations

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.