For the following questions answer them individually
Which disease is caused by deficiency of Vitamin A?
Air enters the body of cockroaches through ______
Which of the following carry the blood from all parts of body back to the heart?
Which of the following is an example of unicellular organism?
I. Euglena
II. Amoeba
III. Paramecium
Which of the following controls the size of pupil in human eye?
Which of the following disease is generally caused by viruses?
Which of the following diseases are NOT caused by smog?
Which of the following gas is the second most abundant gas by volume in atmosphere?
With respect to humans, why is carbon monoxide a pollutant?
Oil spills is seen in which ecosystem?