5. Very short type answer:
1. What are antibiotics?
2. Why rayon is also called artificial silk?
3. Why sodium metal is stored under kerosene?
4. What is an exhaustible resource?
b
5. What are requisites of combustion?
6. What is Red data book?
7. What are the three main parts of a cell?
8. What is external fertilization? Explain with example.
9. What do you understand by puberty?
10. Why a rubber ball floats on water?
Answers
Answered by
2
Answer:
a medicine which is used for destroying bacteria and curing infections is called antibiotics
Answered by
3
Answer:
red data book is a book which says about endangered and endamic species
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