A STUDENT CONDUCTED AN EXPERIMENT TO SHOW CARBON DIOXIDE IST RELEASED DURING RESPIRATION. LIST TWO PRECAUTIONS THAT HE/SHE MUST TAKE FOR OBTAINING CORRECT OBSERVATIONS.
A STUDENT CONDUCTED AN EXPERIMENT TO SHOW CARBON DIOXIDE IST RELEASED DURING RESPIRATION. LIST TWO PRECAUTIONS THAT HE/SHE MUST TAKE FOR OBTAINING CORRECT OBSERVATIONS.