A mutation occurs in mosquito. As a result, some of the mosquito's offspring are resistant to chemical used to kill mosquitoes. They survive when the chemical is sprayed. Explain why the mosquito's offspring have resistance to the chemical and whether the effect of the mutation is beneficial, neutral, or harmful too the mosquitoes.

In 1870, which path would settlers moving west from el paso to los angeles have followed? a) old spanish trail b) gila trail c) california trail d) oregon trail

Based on the topographic map of mt. st. helens, what is the contour interval if the volcano height is 2,950 m? question 2 options: 500 m 600 m 400 m 750 m

Which statement best explains distribution of natural resources? people tend to settle in locations that have the resources they need for survival. some countries have resources that others lack, so trade between countries becomes vital. fossil fuels come from areas that have mountains and other areas that manufacture synthetic gas. areas with natural resources provide a higher standard of living and better quality of life.