What is Freshwater?

Freshwater is a term used to describe water that contains low levels of dissolved salts, typically less than 1%. It is found in lakes, rivers, streams, ponds, and underground aquifers. Freshwater is essential for the survival of various species and is also used for human consumption, agriculture, and industrial purposes.

Characteristics of Freshwater

• Low Salinity: Freshwater has a low concentration of dissolved salts compared to seawater.
• Variable Temperature: The temperature of freshwater bodies can vary depending on the climate and time of year.
• Supports Diverse Life Forms: Freshwater ecosystems are home to a wide variety of plants, animals, and microorganisms.
• Vulnerable to Pollution: Due to its importance for human and ecological health, freshwater is susceptible to pollution from human activities.

Importance of Freshwater

Freshwater is vital for sustaining life on Earth. It is used for drinking, irrigation, sanitation, and various industrial processes. Additionally, freshwater ecosystems support a rich biodiversity and provide recreational opportunities for humans.

Study Guide

Here are some key points to remember when studying freshwater:

1. Describe the characteristics of freshwater and how they differ from saltwater.
2. Explain the importance of freshwater for human societies and ecosystems.
3. Identify and describe different types of freshwater ecosystems, such as lakes, rivers, and wetlands.
4. Discuss the factors that threaten the quality and availability of freshwater, including pollution, overuse, and climate change.
5. Explore the measures that can be taken to protect and conserve freshwater resources.