Question

when a volcanic eruption spews gases and ash into the air, which two spheres are interacting?
hydrosphere and geosphere
geosphere and atmosphere
biosphere and geosphere
biosphere and atmosphere
question 18
1 pts
in an experiment, the factor that we measure is called the
conclusion
controlled variable
independent variable
dependent variable

Explanation:

For the first question: A volcano is part of the geosphere, and the air (where gases/ash are spewed) is the atmosphere.
For Question 18: In experiments, the dependent variable is the outcome factor that is measured and affected by the independent variable.

Answer:

1. Geosphere and atmosphere
2. dependent variable