In which type of research is one or more variable deliberately changes?

A) a study case
B) a survey
C) a observation
D) an experiment

The location of the water table is subject to change. select the best answer from the choices provided ot of

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Asap i will reward you brainliest for best which sentence about protists is accurate? all protists are unicellular and microscopic in nature. they have organelles, so protists are eukaryotic in nature. all protists make their own energy through photosynthesis.