Question

How does the text’s structure help reveal both the challenges and benefits of studying subglacial rivers?
Responses
It alternates between discussing benefits and explaining difficulties to show balance.
It alternates between discussing benefits and explaining difficulties to show balance.
It begins and ends with physical descriptions of Antarctica’s surface.
It begins and ends with physical descriptions of Antarctica’s surface.
It lists reasons they are important before mentioning the existence of microorganisms.
It lists reasons they are important before mentioning the existence of microorganisms.
It organizes by most difficult challenges first, then least difficult.
It organizes by most difficult challenges first, then least difficult.

Answer 1

It alternates between discussing benefits and explaining difficulties to show balance.

This back-and-forth structure lets the reader see the promise of studying subglacial rivers (scientific insights, ecosystems, climate info) immediately contrasted with the practical and ethical obstacles (access, contamination risk, extreme conditions), highlighting both why the research matters and why it’s hard.