Question

Q.12 What is the ozone layer ? How is it depleted.
Q. 13 What are infectious and non-infections diseases? How can we prevent infections disease?
Q.14 What is a Green House effect ?
Q. 15 Describe animal and plant cell in detail.
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Answer 1

See the attachment.
for ans 13) only learn 2 examples for each.

do Learn the diagram for the ozone layer one.

I had made notes. One was in my school copy and other one was my rough copy for home these were notes by app or any other site.


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