Which statement best describes a spring?

the top of the saturated zone
an underground layer of rock or sediment that holds groundwater
groundwater flowing naturally to the surface where it is lower than the water table
a vent in Earth’s surface that periodically ejects a column of hot water and steam

5. which of the following is not true about performing biological investigations? a. most scientists do not use the metric system or si. b. scientists are trained to conduct their investigations safely. c. the metric system and the revised si are based on multiples of 10. d. reading and understanding the steps before conducting an experiment is necessary for safety.