What are the functions of the skin, who proposed the law of universal gravitation, what is digestion, what energy is associated with electricity, and what part of the cell has the largest volume?

here are the answers to your questions:

63) D) All of the above
The skin performs multiple functions, including regulating body temperature, protecting internal organs from external damage and pathogens, and synthesizing vitamin D when exposed to sunlight.

64) A) Newton
Isaac Newton is credited with proposing the law of universal gravitation, which describes the attractive force between any two objects with mass.

65) B) Digestion
Digestion is the process by which food is broken down into smaller molecules that can be absorbed and utilized by the body.

66) D) Electrical
Electrical energy is directly associated with electricity, which is the flow of electric charge.

67) B) Cytoplasm
The cytoplasm, which includes the cytosol and organelles suspended within it, typically constitutes the largest volume of a cell.