Question

ue2) Tick the correct option. (10)

1) Which of the following is not a component of air___

a) oxygen b) water vapour c) carbon

dioxide d) carbon monoxide

2) There can be no life without_____

.a) oxygen b) nitrogen c) water vapour

d) carbon dioxide

3) Which gas support for burning?

a) nitrogen b) oxygen c) carbon

dioxide d) helium

4) The percentage of freshwater on Earth is______

a) 2 b) 1 c) 10 d) 7

5) water in solid state is called____

a) Ice b) steam c) water d) vapour

6) the South poles of the magnet attract

the____

a) South pole b)North pole c)east d)west pole

7). The circuit is represented by_______

When it is ON

a) + b) - c) open key d) close key

8) the skull protect the____

a)heart b) brain c) liver d) spine

9) Blood cells are formed in the _____

a) Joints b) cartilageb c) muscle

d). bone marrow

10) The lower jaw is_____

a) Movable b) fixed c) none d)all of the above​

Answer 1

Answer:

No life without oxygen

Explanation:

Answer 2

Answer:

1. Carbon monoxide. 2. oxygen and carbon dioxide( plants require CO2)

3. Oxygen. 4. 1% 5. ice 6. North pole 7. open key 8. Brain 9. bone marrow 10. movable

Hope it helps :)