8. Colin decided to investigate soil erosion by water. He measured rates of erosion on model hills made of soil, rock, and sand. Which of the following
was the test (independent) variable? *

archaebacteria are found in in forest soil.

hope i spelled it right lol

hope i

-lavira: )

silty loam

hope this

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.