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Science.          
plants Botany.
Subdivisions
Biography.
Angiosperms (Flowering Plants).
Plant Anatomy.
Sources and Links
David DouglasDavid Douglas spent three years gathering botanical and zoological specimens from throughout the Pacific Northwest. The number of species he took back to England far surpassed that returned by any other previous expedition. Saguaro (Carnegiea gigantea)The Saguaro (Carnegiea gigantea) is the largest cactus of the United States, standing up to 50 feet tall and weighing as much as 10 short tons. It is also one of the longest-living plants in the world, with 200-year-old specimens not being uncommon.
LeavesLeaves are the main food-making parts of almost all plants. They capture energy from sunlight and use it to make food out of water from the soil and carbon dioxide. This food provides plants with energy to grow, to produce flowers and seeds, and to carry on all their other activities.  

Botany Illustrated
Biography. | Angiosperms (Flowering Plants). | Plant Anatomy. | Sources and Links
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