GIVE REASONS :-
1.WE PANT WHILE CLIMBING STAIRS .
2. HAIRS-LIKE PROJECTION PRESENT IN ROOTS.
3. HEART MAKES TWO SOUNDS WITH EACH BEAT.
4. PLANTS EXCRETE LESS CARBON DIOXIDE DURING THE DAY TIME.
5. TINY DROPLETS OF WATER APPEAR IF A PLANT IS COVERED BY PLASTIC.
Dear student above are the answer of 2 and 3 respectively , for other queries please ask us in different thread