ARKive
Biodiversity and Evolution
Why is diversity in biology so important for an ecosystem? Explore biodiversity, evolution, and natural selection with a presentation for your biology class. It features clear information, activities for further understanding, and...
Biology Junction
Birds
Birds adapted to almost every climate on the planet, from the Arctic to the rain forests. A presentation focused on birds covers their similarities and differences. It starts with their evolution from reptiles, their many physical...
BBC
Bbc News: Disposable Planet
The Earth's population is soaring, but its resources are finite. Can we provide food, water, energy? Watch a slideshow on our planet's future, and take a quiz to measure your impact on the Earth.