Question

please ans. all these ques.

Answer 1

short sighted defect is the defect in which person cannot be engineer objective is type of defect the eyeball becomes small and this disease is known as myopia it can be corrected by using the concave lens
it is the displacement reaction in which there is copper sulphate solution and iron nail in which iron nail will displace cop
per sulphate from its solution
Ozone Layer protect us from the harmful rays of UV radiation of Sam it is effective for us in many ways but it also have a disadvantage because it have the o3 so if the Ozone the come on the downward it become poisonous because it will mix with the poisonous gases and it will affect us very badly
the upper part is kidney the pipe is ureter and third is urinary blader it store urine
I think its enough

Answer 2

this will definitely help you