7(b)
(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.
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(i) Two major activities of the Red Cross are:
- To extend relief and help to the victims of any calamity — fire, flood, famine, earthquakes etc.
- To procure and supply blood for the victims of war and other calamities.
(ii) Two major reasons for the population explosion in the world are:
- Better health care at all age groups and fewer deaths due to better medical aids.
- Large scale immunization against communicable diseases.
(iii) The four nitrogenous bases in the DNA molecule are Guanine, Thymine, Adenine and Cytosine.