2. Movement of individuals in and out of the land is called
3. The number of people per square unit of area is called
4. Forests in parts of
have the
number of tree species.
and
B. Write a short note on
1. booming human population.
2. the transformation in Easter Island.
3. ill effects of unplanned cities.
C. Answer the following questions.
1. What is population? How has it increased in the past few years?
2. What is the importance of density and dispersal of population?
3. Why does the earth need forests?
4. Write a short note on the transformation of the cit
of Surat
Answers
Answer:
sorry can't answer sorry for that
Answer:
2. Human migration is the movement by people from one place to another with the intention of settling, temporarily or permanently in a new location. ... Migration may be by individuals, family units or in large groups.
3. Population density is a statistic that tells you how many people live in a certain area. In general, pop. density is reported in square miles or kilometers, and may or may not include bodies of water. This type of measurement is called arithmetic density, and is reported as the total number of people per land area..
4. A forest is an area of land dominated by trees.[1] Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing and ecological function.[2][3][4] According to the Food and Agriculture Organization definition, a forest is defined as land spanning more than 0.5 hectares with trees higher than 5 meters and a canopy cover of more than 10 percent, or trees able to reach these thresholds in situ. It does not include land that is predominantly under agricultural or urban land use
B. 1. The area of a sexual population is the area where inter-breeding is potentially possible between any pair within the area, and where the probability of interbreeding is greater than the probability of cross-breeding with individuals from other areas. This article refers mainly to human population.
2. Don't know.....
3. Unplanned cities are those which get modified with time but with not proper guidelines.
C. 1. Human population has grown exponentially over the past century. It has done so largely by producing large amounts of food, and learning how to control disease. Ten thousand years ago, when humans first invented agriculture, there were maybe one million humans on the planet.
2. Dispersal, or the movement and subsequent breeding of individuals from one area to another, strongly influences the population dynamics of a species. Dispersal can help regulate population size and density; many animals, such as aphids and female root voles, have increased dispersal rates under high density situations.
3. The importance of forests cannot be underestimated. We depend on forests for our survival, from the air we breathe to the wood we use. Besides providing habitats for animals and livelihoods for humans, forests also offer watershed protection, prevent soil erosion and mitigate climate change.
4. Its initial success led to a widespread support among the local population and provided motivation for the municipal staff and the elected representatives to make further improvements in the city. ...