Answer:
Q1) Life is possible inside the jar if there is enough oxygen inside
Q2)The fish would possibly die because plant makes big difference to eco system it provides oxygen so if there's no plant present there would be not enough oxygen for the fish to survive but water has oxygen but still it's better if there's plants
Q3) Plants can survive because it's underwater and the plant will be able to get enough sunlight so I think the plant would survive
Q4)Yes, Like sunlight even if an animal plant Is under water they do still need sunlight
components
Plant
Fish
water
sunlight
*function
plant- it provides oxygen (biotic)
fish- it lives on water so there's commensalism happening water helps fish but fish didn't help water it's like give and take (biotic)
water- gives fish Oxygen and place to live(abiotic)
sunlight- helps plant and fish for growth (abiotic)
Explanation:
I hope it helps please like