Questions

The famous Kosijura Case of Bengal happened in whose reign?

Improve the bracketed part of the sentence.

The young man (was carried by) the passionate appeal made by the social worker.

What is the IUPAC name of [Co(NH3)4Cl2]?

Improve the bracketed part of the sentence.

The candidate was so ignorant that the officer was (compelled for asking) him to leave.

Crack the Detectives code and Find the criminal's Name ?

Improve the bracketed part of the sentence.

With its overall popularity sliding, (the party will have been working hard) to bring in the next generation of leaders.

Is a mushroom an autotroph?

Read the passage carefully and choose the best answer to each question out of the four alternatives.

Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author Yoshan Moodley, Professor at the Department of Zoology, University of Venda in South Africa.

Two centuries ago, the black rhinoceros – which roamed much of sub Saharan Africa – had 64 different genetic lineages; but today only 20 of these lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the 'genetic erosion' coincided with colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.

From the second half of the 20th century what has caused a dramatic fall in black rhinoceros population?