An organ is made from two or more tissues, which all work together to do a particular job, like the heart in animals or a leaf in a plant. An organ system is made of a group of organs which all ...

Show kids the biodiversity of the earth beneath their feet, where growing plants and scurrying animals work together to thrive. Help them make a magnifier to explore this important microhabitat.

This observation is explained by another key feature of stem cells that is shared between plants and animals, as explained below. The ability of stem cells to constantly generate new tissues has ...