How does air pollution affect an ecosystem? NEED HELP ASAP

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

Select the correct answer.which scenario describes unethical lab behavior? o a. danny stores the chemicals required for his experiment in flasks and beakers.b.anna publishes the results of her experiment on the growth rate of saplings.c.jason repeatedly runs an experiment until he gets the results he desires.d. mia records her observations of an experiment precisely and accurately.

Plz ! ive been stuck on this forever