- DNA Structure
DNA stands for deoxyribonucleic acid, and is present in every living thing, from bacteria to humans. This molecule was first discovered by Francis Crick and James Watson in 1962.
- Federal Reserve Structure
The Federal Reserve System was established by Congress in the Federal Reserve Act of 1913. It includes the Board of Governors, 12 regional banks, and the Federal Open Market Committee.
Exploring Your Family Tree (Illustration)
A family tree is also known as a pedigree chart, which is a chart that represents family relationships. The term comes from the tree-like structure of the chart. Detailed family trees, used in medical situations and social work, are known as genograms.
Counter Underside (Photograph)
A detailed photograph shows a structure that supports a kitchen countertop. The wood cabinet features a crosswise piece of wood at the top, designed to be strong enough to hold heavy countertops in place.
Outlet Shopping (Photograph)
The exterior facade of a retail shopping center is photographed on a bright day. The stucco structure with arched doorways and small square windows is set against a cloudless blue sky.
- Roofers (Photograph)
Roofers repair the roof of a white clapboard home. They have already removed the tar covering from the top of the roof, and are starting to work on the wooden structure below.
Bridal Flowers (Photograph)
Bridal flowers, comprised of white roses and Shasta daisies, are arranged in a classic round bouquet. Daisies add a light, open element to complement the formal structure of the roses.
- Clean Air Filter (Digital Image)
A close-up of a clean air filter in black and white shows its complex texture and structure. Breathing clean air has become more of a priority in a world where pollution, allergens, and poor air quality are becoming more rampant.
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