In an controlled experiment, why is it important to change just one variable at a time
p. s it a science question but they didn't have a science button

What word is used to describe differences of individual organisms

Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?

Asap brainliest will be 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.