The main constituent of hemoglobin is___________?
The main constituent of hemoglobin is___________?
A. Chlorine
B. Iron
C. Calcium
D. None of these
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“Green House Effect” means:____________?
“Green House Effect” means:____________?A. Pollution
B. Prevention of ultraviolet rays
C. Trapg of Solar energy due to atmospheric carbon dioxide
D. D. NoneThe greenhouse effect is the problem caused by increased quantities of gases such as carbon dioxide in the air. These gases trap the heat from the sun, and cause a gradual rise in the temperature of the Earth’s atmosphere.
Water soluble vitamins are released by__________?
Water soluble vitamins are released by__________?A. Sweat
B. Tears
C. Injections
D. UrineHow many bones are in human Eyes?
How many bones are in human Eyes?A. Three
B. Four
C. Five
D. SevenThe bony cavity which contains the eyeball and its associated muscles, vessels, and nerves. In humans, seven bones make up each bony orbit.
In humans, seven bones make up the bony orbit:- Frontal bone
- Zygomatic bone
- Maxillary bone
- Sphenoid bone
- Ethmoid bone
- Palatine bone
- Lacrimal bone
Water has been discovered on which potentially habitable super-Earth ?
Water has been discovered on which potentially habitable super-Earth ?A. K2-14d
B. K2-15c
C. K2-13a
D. K2-18bK2-18b was first discovered in 2015 by Nasa’s now retired Kepler space telescope. It was found orbiting within the red dwarf star’s habitable zone, making it an ideal candidate to have liquid surface water.
Diamonds are made up almost entirely of what element?
Diamonds are made up almost entirely of what element?A. Carbon
B. Helium
C. Methane
D. Nitrogenwhich of these plants open its mouth when insect sit on its lid?
which of these plants open its mouth when insect sit on its lid?
A. Sunflower
B. Pitcher plant
C. Brassica Plant
D. None of these