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.

What is important for evolution?

Which is the second most abundant metal in the earth's crust ?

In which of the following, functional group isomerism is not possible?

In HTML, ______________ is at the bottom of the page and usually contains disclaimers, copyright information etc.

The molecules responsible for membrane transport are

Improve the bracketed part of the sentence.

If I (just had) the money I would have bought the car.

Improve the bracketed part of the sentence.

Whatever said and done, (not less vital) is the future of the border separating Northern Ireland from the Irish Republic.

Which of the following is NOT a compound?