Human Population Growth

HUMAN POPULATION

GROWTH

HUMAN INTERVENTION

•As the number of people increases, crowding generates pollution, destroys more habitats, and uses up additional natural resources.

HUMAN INTERVENTION

• Humans have accelerated the demand for food and energy to the extent that entire species and ecosystems of plants are being destroyed before scientists can develop an understanding of which plant species have the potential to benefit humanity.

HUMAN INTERVENTION

• Most species remain little known; those that seem to offer the greatest hope for providing new sources of food, drugs, and other useful products exist in tropical rain forests and other areas where rapidly growing human populations can quickly reduce the land to arid, sandy wastes.

THE WORLD’S GROWING POPULATION

• The population of the world is growing faster and faster. It took a long time to reach the first billion people. Each billion after that took less time.

• The population of the world doubled—from 3 billion to 6 billion—in just under 40 years! That’s a lot more people in a very short time.

QUESTION:Can you guess how many people there are in the world?

ANSWER:• It’s a big number. The population of the world is about 6 billion (6,000,000,000) people. If all these people lined up side by side, they would circle the Earth at least 60 times.

WE ALL CAN’T FIT IN HERE!!!WHY THE POPULATION IS GROWING?

• Today, about 90 million people are added to the world population every year. The main reason for this huge growth in population is a drop in the rate of death. Fewer babies and children are dying young, and adults are living longer than ever before.

THE FASTEST-GROWING POPULATION

• The population of Africa is growing faster than the population of any other continent. Africa also has some of the world’s poorest countries. Rapidly growing populations make it difficult for poor countries to develop.

REMEDY Some poor countries  are trying to slow population growth. They encourage families to have fewer children.

CONCLUSION The Literacy rates have increased

and women receive economic status equal to that of men, enabling women to hold jobs and own property. In addition, birth control information in these areas is more widely available, and women are free to make their own reproductive decisions.