Click on image for full size
Image courtesy of Corel Photography
This green slime, also known as algae, may have been among the earliest life on Earth. Algae self-feeds by way of photosynthesis and only indirectly contributes to the weathering of the rock on which it resides.
This is page 3 of 20
Shop Windows to the Universe Science Store!
Our online store
includes fun classroom activities
for you and your students. Issues of NESTA's quarterly journal, The Earth Scientist
are also full of classroom activities on different topics in Earth and space science!