An article has three sections: "What Beach Sand Is Made Of," "Why Ashford's Beach Shrank," and "What Ashford Should Try Next." What does the first section contribute to the whole?

A report has the sections "How Much Sleep Teens Need," "Marbury's 7:15 Bus Schedule," and "One District That Moved to 8:40." What does the last section add to the development of the ideas?

An article's sections run: "Crashes on Third Street Before 2021," "The Bike Lane Goes In," "Crashes Since 2021." What does the middle section contribute?

An article claims lunch trays cut cafeteria waste. Its final section, "Grayson Middle School, Where Trays Changed Nothing," describes one school whose waste held steady. What does that section contribute?

A science article's second section explains that "tremor" means a long, low shaking, unlike a single quake jolt. Its fourth section argues that days of tremor should trigger an evacuation. What does the second section contribute?

A report on a redesigned library ends with a section titled "What the Counts Cannot Tell Us Yet." The earlier sections reported rising visits. What does the closing section contribute to the whole?

An article recommends citywide sorting bins. Between its claim and its recommendation sits a section headed "But Sorting Costs More Up Front." What does that section contribute to the development of the argument?

An article's sections are "The Kell River Before 1962," "Building the Dam," and "Salmon Counts Since the Dam Came Down." What does the first section contribute?

A wildfire article defines "fuel load" as the dry brush left on a forest floor. A later section argues that thinning brush in spring lowers August risk. What does the defining section contribute?

An article states that streetlights draw moths away from gardens. Its third section reports a researcher's nightly moth counts under lit and unlit lamps. What does that section contribute to the whole?

An article on an old trade road covers its building, its use by traders, and then a final section, "Why the Route Still Carries Traffic." What does the final section contribute to the development of the ideas?

A technical article opens with a section describing a crowded, 96-degree subway platform in July. Its later sections explain fan capacity and tunnel airflow. What does the opening section contribute?

A drought article's middle section sets Ashford, which fixed leaking pipes, beside Norwell, which did not, and gives each town's water use. What does that section contribute?

An article on recycling old phones begins with a section listing the copper, gold, and lithium inside one phone. Its last section argues that collecting phones pays for itself. What does the first section contribute?

A report on a seed vault ends with a section headed "If the Power Fails." Earlier sections claimed the vault's seeds are safe for centuries. What does the closing section contribute to the whole?

A museum article's third section explains that light fades ink. Its fourth section explains why the museum shows each letter for only three months. What does the third section contribute?

An article about desert tortoises devotes one section to the fact that a tortoise may live eighty years. A later section says the local count has fallen for twelve years. What does the lifespan section contribute?

A report on teen screen time includes a section, "How We Asked," explaining that students answered anonymously in homeroom. What does that section contribute to the development of the report's ideas?

An article urges more storm shelters. Its fourth section reports what two council members say against them; its fifth answers each point. What does the fourth section contribute?

A guide to a canal has sections "How a Lock Works," "A Barge's Trip Through Six Locks," and "Why Freight Still Moves by Water." What does the middle section contribute to the whole?