The ozone layer is at height of________kilometers from the surface of the Earth?? April 1, 2022April 1, 2022 administrator A. 10 to 20B. 20 to 30C. 30 to 40D. 40 to 50 Share the Post Share the Post
A Little inhalation is done through________?? April 1, 2022April 1, 2022 administrator A. cigarettesB. pipes and cigarsC. Both A and B offer little inhalationD. both offer extreme inhalation Share the Post Share the Post
The human brain uses__________ percent of the total oxygen and blood in the body?? April 1, 2022April 1, 2022 administrator A. 20B. 12C. 35D. 48 Share the Post Share the Post
Which of the following planets have the longest day?? April 1, 2022April 1, 2022 administrator A. JupiterB. MercuryC. EarthD. Venus Share the Post Share the Post
which of the following planets is known as “morning star”?? April 1, 2022April 1, 2022 administrator A. MercuryB. VENUSC. MarsD. Saturn Share the Post Share the Post
At what angle above the horizon must the sun be to create a rainbow?? April 1, 2022April 1, 2022 administrator A. 90 degreesB. 60 degreesC. 40 degreesD. 65 degrees Share the Post Share the Post
The study of cancer is called_____________?? April 1, 2022April 1, 2022 administrator A. ZoologyB. EcologyC. GenomicD. Oncology Share the Post Share the Post
which of these plants open its mouth when insect sit on its lid?? April 1, 2022April 1, 2022 administrator A. SunflowerB. Pitcher plantC. Brassica PlantD. None of these Share the Post Share the Post
The speed of sound in air at sea level is approximately____________?? April 1, 2022April 1, 2022 administrator A. 300 meter per secondB. 320 meter per secondC. 340 meters per secondD. 370 meter per second Share the Post Share the Post
Who invented the safety pin?? April 1, 2022April 1, 2022 administrator A. Charles GoodbyeB. steward HarshoneC. Walter HuntD. A.Rose Share the Post Share the Post