Mossy rocks The Cambrian gets started At the beginning of the Cambrian Period, about 542 million years ago, there were sea creatures like hydras, jellyfish, sponges and seaweed living in [...]
Fern spores on the underside of a frond When plants like moss first began to grow outside the water, about 540 million years ago, they needed a way to reproduce [...]
Human sperm cells with flagella (under a microscope) - They're haploid cells. When a cell divides by meiosis, it ends up with only half the amount of DNA it had before. [...]
Sphagnum moss with spores standing up Wander around your back yard or a park until you find a fern. Look at the underside of one of the leaves. There are [...]
A moss-covered rock During the Cambrian period, about 540 million years ago, some early plants evolved from earlier algae that could live on land, outside of the water. These plants [...]
Moss garden in Virginia For a simple project, go to any place that is often wet, like a pathway on the north side of your house, or the banks of [...]
