Answer: Option D. -> Ratio between the requirements of population and the resources made available to it.
Answer: (d)

Answer: Option D. -> Tanzania
Answer: (d)The Maasai people of East Africa live in southern Kenya and northern Tanzania along the Great Rift Valley on semi-arid and arid lands. Livestock such as cattle, goats and sheep are the primary source of income for the Maasai.

Answer: Option A. -> Thar
Answer: (a)Thar in Rajasthan is the most populated desert in the world.

Answer: Option D. -> 2 3 1 4
Answer: (d)
Manas - Asom,
Pachmarhi - Madhya Pradesh,
Nokrek - Meghalaya,
Achanakmar - Amarkantak Chhattisgarh.

Answer: Option D. -> South-East Asia
Answer: (d)
Southeast Asia is a sub-region of Asia, consisting of the countries that are geographically south of China, east of India. Southeast Asia consists of two geographic regions: Maritime Southeast Asia and Mainland Southeast Asia. Mainland Southeast Asia comprises Cambodia, Laos, Myanmar (Burma), Thailand, Vietnam, and West Malaysia.
These countries are culturally closer to India but ethnically closer to China. Currently, there are around 190- 205 million Buddhists in Southeast Asia, making it the second-largest religion in the region, after Islam.
Thus, around 35 to 38% of the global Buddhist population resides in Southeast Asia. The region has been greatly influenced by the cultures and religions of India and China.

Answer: Option C. -> Mestizo
Answer: (c) Mestizo is a type of person with mixed racial ancestry, especially of mixed European and Indian ancestry.

Answer: Option D. -> Christains, Sikhs, Buddhists, Jains
Answer: (d)

Answer: Option A. -> Zero growth
Answer: (a)When 0-14 and 15-44 age group population of a country is almost identical, the growth of population would be called Zero growth, because the fertility rate (age group of 20-40) shall be probably nil.

Answer: Option A. -> tropical savanna
Answer: (a)
A Savanna is a rolling grassland scattered with shrubs and isolated trees, which can be found between a tropical rainforest and desert biome.
Savannas are also known as tropical grasslands. This type of grassland is found in a wide band on either side of the equator on the edges of tropical rainforests.

Answer: Option D. -> oceans
Answer: (d)Biomass is the mass of living biological organisms in a given area or ecosystem at a given time. Over 90% of the Biomass is in Oceans.