Questions

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?

Which subatomic particle has a positive charge?

Improve the bracketed part of the sentence.

My patients (were waited) for me since morning.

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The Saranda forest is infested (with) King Cobras.

Select the related word/letters/number from the given alternatives.

? : GA : : QR : JI

The boundaries of the plates of the earth's crust are the weak zones known as ___________ zones.

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Internet providers would not block content because it would (not to be make economic sense) and consumers would not stand for it.

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With a population of over one billion, India is the second (most popular countries) in the world.