The bodyguard of the Earth is——–that save the Earth from many Comets and Asteroids. A. JupiterB. UranusC. SaturnD. Mars
According to Big Band Theory, the Universe began about——–billion years ago. A. 10 to 20B. 20 to 30C. 30 to 40D. 40 to 50
Biosensor is used to measure? A. Blood glucose levelB. The body pH valueC. Amoun of hemoglobinD. Salinity in Urine
