Psychologists study human relationships while ecologist study relationships between organisms in the environment. An introduction to ecology and the related vocabulary benefits scholars as they progress through the presentation and...

The forestry presentation found here lists and describes a variety of tree diseases. A few unappetizing photos are included to show symptoms of some of these diseases, or the insects and fungi that cause them. If you have a class that is...

Do you know the name for the biological study of interactions? A short presentation with accompanying worksheet introduces individuals to ecology. The materials offer a broad overview of the subject and the levels of organization to...

For use early in the year with your ecology class, this collection of slides introduces viewers to cycles in nature and relationships between organisms. There is a food web diagram, but the presentation is incomplete without any diagrams...

Your students will definitely understand what the word ecosystem means after viewing this slide show. The word ecosystem is broken down to its root meaning, described with examples, and then defined by the factors that comprise it. Note:...

This lesson will introduce abiotic and biotic factors, giving examples and comparing/contrasting the two. It is 2 of 4 in the series titled "Abiotic and Biotic Factors."

This lesson will introduce abiotic and biotic factors, giving examples and comparing/contrasting the two. It is 4 of 4 in the series titled "Abiotic and Biotic Factors."

This lesson will introduce the properties of ecosystems. It is 1 of 4 in the series titled "Ecosystem."