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Frogs are a species of amphibian. In recent years, there has been a decline in the numbers of amphibians worldwide.…
Frogs are a species of amphibian. In recent years, there has been a decline in the numbers of amphibians worldwide. This decline is thought to be caused by many things....

Cutthroat trout are a type of salmon. The scientists in this study wanted to find out if cutthroat trout behave…
Cutthroat trout are a type of salmon. The scientists in this study wanted to find out if cutthroat trout behave like other salmonids. Other salmonids had been found to swim...

Cutthroat trout are a type of salmon. The scientists in this study wanted to find out if cutthroat trout behave…
Cutthroat trout are a type of salmon. The scientists in this study wanted to find out if cutthroat trout behave like other salmonids. Other salmonids had been found to swim...

Help Busy Bee complete each statement by filling in the blanks for missing words. Use what you’ve learned about watersheds,…
Help Busy Bee complete each statement by filling in the blanks for missing words. Use what you’ve learned about watersheds, pollution, and the Great Lakes in “Full Throttle Model” to...

Many changes have occured in the Rio Grande since the 1940s that have created a river that is deeper and…
Many changes have occured in the Rio Grande since the 1940s that have created a river that is deeper and faster. This has created problems for the Rio Grande silvery...

A world of wonder awaits just below the surface, and this distance learning adventure explores these amazing places. Specially adapted…
A world of wonder awaits just below the surface, and this distance learning adventure explores these amazing places. Specially adapted animals, beautiful mirror pools, sparkling crystals, domed caverns, and twisting...

Test your knowledge on alluvial soil, watersheds, and fish.
Test your knowledge on alluvial soil, watersheds, and fish.

If the temperature of a stream rises too high, the animals that live in the stream may find it difficult…
If the temperature of a stream rises too high, the animals that live in the stream may find it difficult to survive. Big changes in a stream’s daytime temperature as...

From 1920 to 1950, a tree species called albizia (Falcataria moluccana) was brought to Hawai‘i from islands located north and…
From 1920 to 1950, a tree species called albizia (Falcataria moluccana) was brought to Hawai‘i from islands located north and northeast of Australia. A fast-growing tree, albizia now grows all...

Ecosystem services are the benefits that nature provides through natural processes. For example, plants provide clean air, natural fire helps…
Ecosystem services are the benefits that nature provides through natural processes. For example, plants provide clean air, natural fire helps cycle nutrients, and bats act as insect control. Ecosystem services...

After reading the Caves and Karst Edition of Natural Inquirer, test your knowledge with an eyeChallenge. Examine each image taken…
After reading the Caves and Karst Edition of Natural Inquirer, test your knowledge with an eyeChallenge. Examine each image taken from the edition and explain what each represents. You may...

After reading the Freshwater edition of Natural Inquirer, test your knowledge of the issue with this eyeChallenge. Explain what each…
After reading the Freshwater edition of Natural Inquirer, test your knowledge of the issue with this eyeChallenge. Explain what each of the images from the journal represents. Students may write...