This brief video lesson discusses water contamination and treatment. Discussion/assessment questions and suggested supplemental resources are also included.

Students discuss causes and effects of and the related issues and solutions concerning wetland loss.

This brief video lesson discusses fresh water sources and use. Discussion/assessment questions and suggested supplemental resources are also included.

In this activity, students take water samples from a local waterway. They will test the pH and then place some jars of water in a windowsill that gets direct sunlight and some in a windowsill that gets no sunlight. After several days, students will make observations about living organisms that may be living in the water.

In this lesson, students will conduct a simple experiment to test what the ph of water may be when certain solids are added to the water and relate this to the effects of acid mine drainage.

Students explore the connection between an herbicide used to kill weeds and the health of some populations of the frogs.

This is an encyclopedia entry for the term "groundwater." Groundwater is all the water found underneath the Earth?s surface. Text for this entry is appropriate for the middle and high school grade levels.

This is an encyclopedia entry for the term "marine sanctuary." A marine sanctuary is a general type of marine protected area (MPA). The Flower Garden Banks National Marine Sanctuary and the Pelagos Sanctuary for Mediterranean Marine Animals are featured. Text for this entry is appropriate for the middle and high school levels.

This is an encyclopedia entry for the term "rain." Rain is liquid precipitation: water falling from the sky. Raindrops fall to Earth when clouds become saturated, or filled, with water droplets. Text for this entry is appropriate for the middle and high school grade levels.

This encyclopedia entry is for the term "tide." The regular rise and fall of the ocean?s waters are known as tides. Along coasts, the water slowly rises up over the shore and then slowly falls back again. Text for this entry is appropriate for the middle and high school grade levels.