A good description of the growth and changes in plants from the seed through the adult plant. College level discussion that includes the chemicals involved in the regulation of plant growth.

With rapidly rising global temperatures come seasonal changes. As spring comes earlier for some plant species, there are ripple effects throughout the food web. Regina Brinker explains how phenology, or the natural cycles of plants and...

Detailed website that was a companion to a 1995 traveling exhibit of the Smithsonian. Links to lesson plans and other educational materials are at the bottom of the page. Enter the exhibition to explore the world of the ocean.