An experiment would have a low validity if it had . A. no controls
B. been repeated
C. been replicated
D. a clear procedure

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field

Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase

Were does condensation occur? a) hydroshereb) lithosherec) boishered) atmosphere