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The sentence tells us how the biggest asteroid impacts would have swathed (enveloped) our earth in rock vapour, boiling the oceans dry and fumigating (sterilizing) the surface worldwide (globally). RECALCITRANT means uncooperative and will not bear relevance here as the sentence uses it to describe rock vapour. It can be replaced with the given word INCANDESCENT which means emitting heat. Therefore, (b) is the right answer.
The amount of light entering the eye is controlled by the_________.
Animals like fishes, amphibians, reptiles, birds, and mammals are included in which phylum based on common features like the presence of a notochord and...
Which is the largest part of the human brain?
What is the primary cause of hypertension (high blood pressure)?
Which type of connective tissue connects muscles to bones?
The yellow color of human urine is due to:
Flocs in sewage treatment refer to:
Which of these structures in the nephron is primarily responsible for filtration of blood?
The rhythmic contraction of the muscles lining the gut to push food along is called: