Question
What could be the reasons behind enormous increase in human population?
✓
Answer
- Human population has increased enormously in last century due to increased natality and reduced mortality.
- Due to advances in medical sciences, vaccinations and better life expectancy mortality rate has been considerably reduced. With the exception of Covid 19 Pandemic, all the mortalities due to epidemics were controlled due to modern medical facilities.
- Due to better food production and advances in agriculture methods, people are not starving anymore. This has considerably reduced the deaths due to starvations.
- However, natality rate has not been reduced especially in developing countries. Lack of family planning measures, ignorance, illiteracy and traditional thinking about birth of male child, all such factors have caused tremendous increase in the human population.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
How were protobionts formed with the help of nucleic acids during chemical evolution?
What is the relation between immunity and organ transplantation?
What are the preventive measures against Global warming?
How citizens should sort out solid wastes?
Long answer question.
By taking industrial melanism as one example. Explain the concept of natural selection.
What is e-waste? How is it disposed
Complete the following flow chart
Match the column A with B and rewrite correct pairs.
| A | B | |
| a. | Penicillium roquefortii | Alcohol |
| b. | Lactobacillus bulgaricus | Cheese |
| c. | Lactobacillus acidophilus | Yoghurt |
| d. | Saccharomyces cerevisiae | Curd |
| Blood vessel | Functions |
| (1) Pulmonary aorta | (a) Carries oxygenated blood to left atrium |
| (2) Superior vena cava | (b) Carries oxygenated blood to all body parts |
| (3) Pulmonary vein | (c) Carries deoxygenated blood from upper parts of body to right atrium |
| (4) Aorta | (d) Carries deoxygenated blood to lungs |
Explain any four therapies used in treatment of cancer.