Answer in brief:
(a) Why should we conserve biodiversity?
(b) Protected forests are also not completely safe for wild animals. Why?
(c) Some tribals depend on the jungle. How?
(d) What are the causes and consequences of deforestation?
(e) What is Red Data Book?
(f) What do you understand by the term migration?
Answers
Answer:
a) A balance in ecosystem is maintained by conserving biodiversity. If the balance between wildlife , plants, animals are threatened, it is a huge threat to human existence.
b) Poachers anyhow manage to poach wild animals illegally at large scale, so forest is also not completely safe for them.
c) Food, cloth, shelter, wood and other requirements.
d) causes:
i) For getting more land by cutting down trees.
ii) Making of furnitures from wood.
Consequences :
Global warming, climate change, reduced rainfall, prolonged summer season.
e) All the records of endangered species are kept in a book called Red data book.
f) Travelling from one geographical location to another in search of food, shelter is called migration. In birds this is a seasonal event.
Explanation:
Answer:
(a) Biodiversity refers to the number and variety of various life forms such as plants, animals, and micro-organisms in an area. Plants and animals depend on each other for survival. This means that the destruction of either of the two will affect the life of the other. Hence, we need to conserve biodiversity to maintain the balance of nature.
(b) Protected forests are not completely safe for wild animals because people who live near or adjacent to forests use resources from forests to fulfill their requirements. In this process, wild animals are killed and sold for lucrative amounts of money.
(c) Tribals gather food, fodder, and fallen branches of trees from forests. Hence, they depend on forests for their daily requirements.
(d) Causes of deforestation:
(i) Forests are cleared for accommodating expanding urban areas and for fulfilling their ever-increasing requirements.
(ii) Forests are destroyed to clear land for crops and cattle grazing.
(iii) Trees are cut down to be used for firewood.
Consequences of deforestation:
(i) Soil erosion
(ii) Loss of biodiversity
(iii) Floods and droughts
(iv) Climate change due to global warming
(v) Disruption of water cycle
(e) Red Data Book is a source book that maintains an international list of all endangered animal and plant species. This book is maintained by IUCN (International Union for Conservation of Nature and Natural resources).
(f) Migration refers to the movement of an organism or a group of organisms from its natural habitat to another place at a particular time every year. Organisms migrate from one place to another to avoid inhabitable climatic conditions or for breeding.