Which procedure could be used to demonstrate that matter is conserved during a physical change? (1 point) O Find the mass of a raw egg. Cook the egg. Find the mass of the cooked egg.

O Find the mass of a piece of ice. Let the ice melt. Find the mass of the liquid water.

O Find the mass of a cup of water. Boil the water. Find the mass of the water that remains.

O Find the mass of an apple. Cut the apple and remove the core. Find the mass of the remaining apple.

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.

Me with this and you will be marked brainliest

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.