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What Are Wetlands — Reading Comprehension

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5-ESS2-2

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This engaging 5th grade science reading passage introduces students to wetlands and their critical role in Earth's water systems, aligned with NGSS standard 5-ESS2-2. Students explore how wetlands—including marshes, swamps, and bogs—act as natural sponges that absorb and filter water. The passage explains how wetlands prevent flooding by storing excess water during heavy rains and slowly releasing it during dry periods. Students learn about the diverse habitats wetlands provide for fish, birds, insects, and amphibians. The audio-integrated content uses age-appropriate language and real-world examples to help students understand water distribution and the importance of wetland conservation. Activities include comprehension questions, writing prompts, and graphic organizers that reinforce understanding of wetland functions and their environmental significance. This resource builds foundational knowledge about Earth's water systems and prepares students for hands-on investigations about water distribution and ecosystem interactions.

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Alejandro Morales USFWS wetland ohio — USFWS wetland ohio" by Alejandro Morales/USFWS / Wikimedia Commons

Wetlands are areas of land where water covers the soil for part or all of the year. The water in wetlands is usually shallow—only a few inches to a few feet deep. Wetlands include marshes (areas with grasses and reeds), swamps (areas with trees and shrubs), and bogs (areas with spongy, wet soil). These special places are important because they help control where water goes on Earth and protect communities from water-related problems.

Wetlands act like giant natural sponges. When heavy rain falls or snow melts, wetlands soak up the extra water and hold it. This prevents flooding, which happens when too much water flows into rivers and streams at once. Without wetlands, water would rush quickly across the land, causing damage to homes and farms. During dry times, wetlands slowly release the stored water back into rivers and underground water supplies. This steady release helps keep water flowing even when it hasn't rained in a while.

Wetlands also work as natural water filters. As water moves slowly through a wetland, the soil and plants trap dirt, chemicals, and pollution. The roots of wetland plants grab onto harmful substances and keep them from flowing into lakes and rivers where people get their drinking water. Think of wetlands like a coffee filter—they catch unwanted materials while letting clean water pass through.

Many animals and plants make their homes in wetlands. Fish lay their eggs in the shallow, protected waters. Birds such as ducks, herons, and egrets hunt for food in wetlands. Frogs, turtles, and insects thrive in these wet environments. The mix of water and land creates a perfect habitat (a place where an organism lives) for species that need both. Some animals spend their entire lives in wetlands, while others visit to find food or raise their young.

Wetlands cover only about 6% of Earth's land surface, but they are extremely valuable. People have drained many wetlands to build farms, roads, and buildings. Scientists now understand that protecting wetlands helps protect our water supply, prevents flooding, and saves homes for countless species. When we take care of wetlands, we take care of an important part of Earth's water distribution system.

Interesting Fact: The Florida Everglades is one of the largest wetlands in the world, covering about 1.5 million acres. It's home to rare animals like the American alligator, the Florida panther, and the West Indian manatee!

What are wetlands?

Deep ocean areas with fishLand covered by shallow water yearlyDry desert areas without waterMountain areas with snow

Which type has trees and shrubs?

MarshesBogsSwampsRivers

How do wetlands prevent flooding?

They make rain stop fallingThey soak up extra waterThey build walls around citiesThey make water evaporate faster

How do wetlands clean water?

They boil the water hotThey add chemicals to waterPlants trap dirt and pollutionAnimals drink all bad water

Why are wetlands good animal habitats?

They have only dry landThey mix water and land togetherThey have no plants growingThey are always frozen solid

What percent of Earth is wetlands?

About 6 percentAbout 50 percentAbout 75 percentAbout 90 percent

Wetlands only help during rainy weather.

TrueFalse

What does habitat mean?

A type of weather patternWhere an organism livesA kind of wetland plantWater that causes flooding

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• Reading curriculum support
• Independent reading practice
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What Are Wetlands — Reading Comprehension

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