Question

1. What will happen if the percentage of oxygen and carbon dioxide are reversed?
(Hint: All the plants and animals depend on oxygen for breathing.)
2. Why do factories have long chimneys? (Hint: Smoke and dust pollute the air and cause many
respiratory diseases.)​

Answer 1

Answer:

1.If the oxygen and carbondioxide concentrations are reversed then humans will not survive. ... The air we breath in has higher percentage of oxygen and so in lung cells hemoglobin preferentially binds to oxygen releasing carbondioxide which is breathed out.

2.Long chimneys take the harmful smoke and gases produced in the factories high up in the air so as to reduce its harmful effects on the ground.

hope it will help you ✌️

Answer 2

1.If the oxygen and carbondioxide concentrations are reversed then humans will not survive. ... The air we breath in has higher percentage of oxygen and so in lung cells hemoglobin preferentially binds to oxygen releasing carbondioxide which is breathed out.

2.Long chimneys take the harmful smoke and gases produced in the factories high up in the air so as to reduce its harmful effects on the ground.

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