Please help?!? Which of the jobs below best describes Steve's job title?

Steve's job is to collect information on factory emissions and help companies lessen their carbon footprint.

horticulturalist

food scientist

agricultural scientist

environmental analyst

The united states constitution gives the the power to regulate interstate commerce.

Emilio is facing imminent death. consistent with a recent study of canadians in a similar situation, given a choice, the least desirable place he would choose to die is:

What is the difference between an observational study and an​ experiment? choose the correct answer below. a. in an​ experiment, a treatment is applied to part of a population and responses are observed. in an observational​ study, a researcher measures characteristics of interest of a part of a population but does not change existing conditions. b. in an​ experiment, a treatment is applied to an entire population and responses are observed. in an observational​ study, a researcher measures characteristics of interest of an entire population but does not change existing conditions. c. in an​ experiment, a researcher measures characteristics of interest of a part of a population but does not change existing conditions. in an observational​ study, a treatment is applied to part of a population and responses are observed. d. in an​ experiment, a researcher measures characteristics of interest of an entire population but does not change existing conditions. in an observational​ study, a treatment is applied to an entire population and responses are observed.