Question

(i) List any two major activities of the Red Cross.
(ii) Write any two major reasons for the population explosion in the world.
(iii) Write the names of four nitrogenous bases in a DNA molecule.

Answer 1

(i) Activities of Red Cross are as follows:
(a) It aims at providing social and medical care during the war, and natural calamities such as famine, drought, flood, earthquakes etc.
(b) To arrange for an ambulance during emergencies and look after maternal and child welfare centers.
(ii) Reasons for the population explosion in the world are as
follows: the health care at all age groups and fewer deaths due to better medical aids.
(b) Large scale immunization against communicable diseases.
(c) Balanced and improved nutrition specially for growing children.
(d) More children reach the reproductive age.
(iii) Nitrogenous bases of DNA molecules are :
(a) Adenine - Purines
(b) Guanine - Purines
(c) Cytosine - Pyrimidines
(d) Thymine - Pyrimidines