I think it’s organism since it already stated skeletal and respiratory then it means it cannot be tissue or organ because skeletal is included so i say go for organism
Answer:
The red blood cells will burst or rupture when it is diluted and it will be one transparent and visible. ... Because water is an hypotonic solution, water from outside of the cell to the inside making the cells to continue to swell up and rupture ,a phenomenon known as haemylosis.
All of them regulate body processes
Nutrients are carbohydrates,protein,fat,water,minerals,vitamins
