Please help! I just wanna know I'm gonna be putting the right thing ómò I'll give brainliest to the correct answer TT^TT Which organ system(s) are involved with inhaling oxygen? Select all that apply.
A. Skeletal system
B. Respiratory system
C. Muscular system
D. Nervous system

The deserts of the sahara and australia are associated with

Why do we perceive objects as retaining their brightness under different lighting levels?

Dr. arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode. it measures the volume of the sound that occurs at the minimum pressure at which the explosion will occur. it then increases the pressure and measures the volume of the explosions that occur. what kind of investigation is the scientist conducting?