An attempt to preserve or protect the environment from harmful changes is known as . *

What type of specimens where you able to see under each of the microscopes in the microscope activity

Which of these serves as a reference for comparison during a scientific investigation? a)outcome variable (dependent variable) b) test variable (independent variable) c)control group d)hypothesis

What type of organism is a one-celled organism that functions as a single unit? a. bi-celled b. single-celled c. pre-celled d. multi-celled