Vulture are not careful about what they eat. This makes them vulnerable to eating meat that could be toxic. The consequence often is the death of these birds. That is one reason why these birds are not widely seen in Bangladesh anymore. The other is that the. trees which vultures perch on have also been. disappearing from the land. The net result is the birds are not present throughout the country in the numbers in which they were viewed a generation, or even a decade, ago.

An antonym for 'toxic' is:

An intellectual is one who is enlightened; and being an enlightened person, he has to give light to others who are in need of it. In every society, we find intellectuals such as philosophers, scientists, scholars, writers, and critics; and they, as enlightened men, have a great responsibility towards society. In a society, all cannot be intellectuals. If a time comes when all are intellectuals it would be a blessed time indeed; but intellectuals have the great responsibility of guiding others on to the right path. If today we have our civilisation and culture, if we have orders and security in life, and if our life is better that that of our primitive ancestors, it is because the intellectuals, from time to time, have been guiding humanity on the path of felicity and amity. Therefore, the intellectual should come out of his ivory tower and try to elevate others to his level."

What does the phrase 'ivory tower' in the extract denote?

English speaking people have never been really homogeneous in their use of the English language. Today, if you travel extensively in the British Isles, you notice differences in pronunciation and vocabulary from shire and shire, or even if your ear is good enough, from town to town. In London alone you can find tremendous diversity in the varieties of English. In the United States, likewise, the language differs somewhat from place to place and from one social ""class"" to another. Many New Yorkers don't pronounce words as Chicagoans do, and in Denver people don't sound like those in Chicago. In some parts of the Southwest, Spanish influence shows up in the vocabulary; elsewhere, Germans and others have affected the English language."

The word "tremendous" means-

An intellectual is one who is enlightened; and being an enlightened person, he has to give light to others who are in need of it. In every society, we find intellectuals such as philosophers, scientists, scholars, writers, and critics; and they, as enlightened men, have a great responsibility towards society. In a society, all cannot be intellectuals. If a time comes when all are intellectuals it would be a blessed time indeed; but intellectuals have the great responsibility of guiding others on to the right path. If today we have our civilisation and culture, if we have orders and security in life, and if our life is better that that of our primitive ancestors, it is because the intellectuals, from time to time, have been guiding humanity on the path of felicity and amity. Therefore, the intellectual should come out of his ivory tower and try to elevate others to his level."

Who are intellectuals according to the extract?

Since a writer's main purpose is to explain things clearly, description is an important aid. To add liveliness to an essay, descriptive details are necessary to create a clear, unified impression of an object or a scene. As a technique in writing, description matches the kinds of details we see in vivid and effective photographs. Good descriptive writers help the reader to 'see' objects, scenes and even moods by means of language."

"unified impression" means-----