Question

1. When we exhale or breathe out, percentage of a gas is high. Name the

gas

2. A car travels 80 km in two hours. Calculate its speed.

3. Name the breathing organs in a) cockroach

b) frog

c) plant

d) earthworm.

4. Name the kind of mirror used

a. In side view mirrors of cars

b. by dentists

5. Give one function each of a) W.B.C b) Platelets

6. The thinnest blood vessel is

a. Vein b) artery c) capillary d) platelet

7. A plant that reproduces from its leaf is

a. Rose b) Carrot c) Bryophyllum d) Papaya

8. An example of a winged seed is

a. oak b) drumstick c) castor d) Xanthium

9. The SI unit of speed is a. km/hr b) km/min c) mm/s d) cm/s 10. Which graph represents a body with no motion?​

Answer 1

Answer:

when we exhale the CO2 is highly present in our body

Answer 2

Answer:

1)CO2 carbon dioxide

Explanation:

cccc