Every person has their own part to play or if you want to get scientific then a niche. And if somebody doesn't do their job then it could slow everyone else down. Maybe I don't fully understand the question, But I hope its right.
Answer:
Ar
Explanation:
Argon isn't with the metals on the periodic table
Osmosis. If the cell has too much salt the cells will swell. let me know if you want me to explain.
Answer:
C using gas for heat
Explanation:
only thing that uses fossil fuels
By using ratios. You get a punnet square and then get the ratio or even the percentage.