Keystone species lesson worksheet and answer key.
This news report by CBS Mornings (6:18) provides students with an interesting way of seeing the power of beavers as a keystone species in todays world. This short video news report is a great way to introduce students to the concept of keystone species.
Here is a printable guided worksheet suitable for late elementary and middle schools students to introduce the concept of keystone species. Also available is a teacher answer guide.