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In this activity, learners explore the concept of permeability to better understand why amphibians are extremely sensitive to pollution.

What does it mean to be alive? Is a cactus alive? Is a seed alive? Is the air we breathe alive? What are the necessary characteristics?

In this group activity, learners consider environmental conditions—temperature, presence of water, atmosphere, sunlight, and chemical composition—on planets and moons in our solar system to determine

In the wild, small crustaceans known as brine shrimp live in marine habitats such as saltwater lakes.