The iridescent nature of opals is a result of water trapped inside silica material. With time, this water will escape. Unlike advice given for most precious stones, experts advocate frequent handling of opals, which transmit body oils to the stones and helps them maintain their water content.
Which of the following can be inferred from the passage?
English Language
Reading Comprehension
7,656 QuestionsReading Comprehension Questions
Popular illusions about birds extend further than the use of the word 'egg-shape' that would suggest that all eggs are alike. For instance, there is the popular idea that owls hoot. Actually, only very few owls hoot and these include the common brown or tawny wood owl. The white barn owl screeches; the little owl has a wailing cry, the long-. eared owl barks; and the short-eared owl snorts! Another mistaken idea is that all ducks 'quack' because the common farmyard duck is a domesticated form of the common wild duck or mallard that quacks. Actually, most wild ducks call with whistles.
A wisp of smoke on the horizon with a dark snake crawling beneath it announced the approach of the train. As it drew nearer, the deep silence of the place was gradually displaced by a creaking of brakes and a hissing of steam. Save for myself, no one entered the train and no one alighted. The porter with leisurely expertness, trundled a couple of milk churns on board, the door was slammed, the guard signalled to the driver, and we moved off, leaving the small station once more to its drowsy silence.
A wisp of smoke on the horizon with a dark snake crawling beneath it announced the approach of the train. As it drew nearer, the deep silence of the place was gradually displaced by a creaking of brakes and a hissing of steam. Save for myself, no one entered the train and no one alighted. The porter with leisurely expertness, trundled a couple of milk churns on board, the door was slammed, the guard signalled to the driver, and we moved off, leaving the small station once more to its drowsy silence.
Which of the following if true most helps to explain the decline in the population of the fish species?
Assume you had a 10m$^2$ pond to study. You measured the amount of light energy bathing the water surface at 1,000kcal.
Read the following passage and answer the following question.
A group of 10 newly hatched chicks was separated into two smaller groups containing five chicks each. One group (Group A) was left with the mother hen, the other group (Group B) was taken shortly after hatching and kept with a mother goose. The chicks in Group A displayed normal behavior and followed the mother hen around. The chicks in Group B followed the mother goose around and exhibited goose like behavior, such as swimming. After one week, Group B was reunited with the mother hen, but ignored her, and instead continued to follow the mother goose around the barnyard.
The behaviour exhibited by the chicks in Group B is