In night, when photosynthesis is stopped, plants__________.
A- take in Carbon Dioxide
B-take in Oxygen
C-give off Carbon Dioxide
D-give off Oxygen
A- take in Carbon Dioxide
B-take in Oxygen
C-give off Carbon Dioxide
D-give off Oxygen
A. River water
B. Mineral water
C. Sea water
D. None of these
A. Night blindness
B. rickets
C. hair fall
D. scurvy » Read More…
A. Water
B. Chlorine
C. Carbon dioxide
D. Salt
A. 1 – 5 days
B. 3 – 7 days
C. 4 – 8 days
D. 5 – 21 days » Read More…
A. 15,000 to 20,000
B. 10,000 to 15,000
C. 5,000 to 10,000
D. 20,000 to 25,000 » Read More…
A. Al-Khawarzimi
B. Al-Haitham
C. IsasacNewton
D. Pythagoras » Read More…