I need help with a discovery of a new world crossword puzzle

According to the graph above, in which location(s) do at least half of people practice christianity? a. zimbabwe only b. nigeria and mali only c. zimbabwe and south africa only d. zimbabwe, nigeria, and south africa only

Eter lives in a beautiful region. peter and other residents of his region use water from the river that flows through their region. recently, mark industries decided to set up their chemical plant near that river. peter realized that the waste from the chemical plant would pollute the river. he decided to seek a legal ordinance that would restrict the use of land near that river for specific use only. which type of zoning will peter and his region?

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.