In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".
As feared, (differences into) the families pose a hurdle.
Methane is a greenhouse gas that has 23 times adverse effects on climate than carbon dioxide. Methane is that greenhouse gas which is produced by the raising of cattle. On an average a cow can produce 80 - 120 kgs of methane in an year.
The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.
Our only enemies were
X-heat, thirst, and flies, but far Y-from man or beast than that awful trinity Z-rather would I have faced any danger