5. Natural Vegetation and Wildlife

(a) Differentiate between the forest types of Brazil and India.

(b) Correlate wildlife and natural vegetation in India and Brazil.

• India: Wildlife is closely adapted to the vegetation. Elephants are found in hot and humid evergreen forests, while one-horned rhinoceroses thrive in the swampy and marshy lands of Assam. Arid and thorny scrublands are home to wild asses and camels. Snow leopards and yaks inhabit the snow-capped Himalayan regions.
• Brazil: Wildlife diversity is the highest in the world, perfectly adapted to its varied flora. The swampy areas of the Pantanal host huge anacondas and alligators. The dense Amazon equatorial forests are home to various monkeys, pumas, leopards, and millions of insect varieties.

(c) What environmental issues are faced by Brazil and India?

• Both countries face severe environmental degradation due to massive deforestation.
• The illegal smuggling of wild animals threatens biodiversity in both nations.
• Slash and burn agriculture (known as 'Roca' in Brazil and 'Jhum' in India) clears large patches of forest land, severely damaging the ecosystem.
• Increasing pollution from rapid urbanization and industrialization further threatens natural habitats.
• Consequently, many endemic species in both countries are on the verge of extinction.

(d) What are the major causes of degradation of forest in Brazil and India?

• Slash and Burn Agriculture: Practices like 'Roca' in Brazil, where land under forests is cleared by cutting and burning for temporary subsistence agriculture.
• Deforestation: Large-scale cutting of trees to meet the demands of expanding human settlements and industries.
• Pollution: Environmental pollution negatively affects forest health and the wildlife dependent on it.
• Illegal Activities: The illegal smuggling of wild animals disrupts the ecological balance of the forests.

(e) Why does the deciduous type of vegetation occupy most of India?

• Deciduous forests are found in regions receiving rainfall between 1000 mm to 2000 mm.
• A vast majority of the Indian subcontinent experiences this moderate amount of monsoon rainfall followed by a distinct, prolonged dry season.
• To survive the dry summer months, trees in these regions shed their leaves to prevent water loss due to evaporation. Examples include teak, bamboo, banyan, and peepal.
• Because this climate profile covers most of the central and peninsular parts of India, deciduous vegetation is the most widespread.

(a) The northern part of Brazil is covered by dense forests.

• The equator passes through the northern part of Brazil, resulting in a hot and humid equatorial climate.
• This region receives heavy and continuous rainfall throughout the year, paired with abundant sunlight.
• These ideal climatic conditions allow vegetation to grow rapidly and densely without a seasonal dry period, leading to the formation of the dense Amazon evergreen rainforests.

(b) Vegetation is scarce in the high altitudes of Himalayas.

• The high altitudes of the Himalayas experience extremely cold temperatures and are covered in snow for most of the year.
• The harsh climate, lack of liquid water, and frozen soil make it incredibly difficult for deep-rooted trees to survive.
• As a result, only short, seasonally flowering plants and scarce alpine vegetation can grow during the brief summer window.

(c) A wide variety of species of insects is found in Brazil.

• Brazil is home to the vast Amazon rainforest, which provides a hot, humid, and extremely dense environment.
• The evergreen rainforests offer abundant food sources, a thick multi-layered canopy, and plenty of decaying organic matter.
• These conditions serve as a perfect breeding ground and ideal habitat for millions of different insect varieties.

(d) Wildlife in India is decreasing day by day.

• Rapid deforestation is destroying the natural habitats that animals rely on for food and shelter.
• Poaching and illegal hunting pose a direct and severe threat to many species.
• Rising pollution levels degrade land and water ecosystems, further harming wildlife populations.
• As a combination of these factors, many species, such as the cheetah, have faced local extinction, and others remain highly endangered.

(e) Like India, there is a need for conservation of forests in Brazil too.

• Brazil is facing severe environmental degradation due to massive deforestation, pollution, and the illegal smuggling of wild animals.
• Slash and burn farming ('Roca') destroys large areas of forest land every year.
• Because of this rapid habitat destruction, many endemic species unique to Brazil are on the verge of extinction.
• These rainforests act as the 'lungs of the world' by absorbing huge amounts of carbon dioxide and releasing oxygen; thus, their conservation is critical not just for Brazil, but for global environmental stability.