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from article Beef cattle production
Angus bull with overall carcass merit. (Credit: Jim Koch/Agricultural Research Service, U.S. Department of Agriculture)
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Image
from article Beef cattle production
Brahman (zebu) bull (Bos indicus). (Credit: Scott Bauer/Agricultural Research Service, U.S. Department of Agriculture)
Image
from article Beef cattle production
An exemplary purebred Hereford bull. (Credit: Michael MacNeil/Agricultural Research Service, U.S. Department of Agriculture)
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from article Beef cattle production
A group of Simmental cows. (Credit: Iowa Beef Industry Council)
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from article Beef cattle production
Three Charolais heifers. (Credit: Darcy Vial/Farm Service Agency, U.S. Department of Agriculture)
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from article Beef cattle production
In order to attain market weight, cattle are fed often in feedlots. (Credit: Dave Hughes/Getty Images)
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from article Beef cattle production
In the United States, beef animals used for food must be inspected extensively pre- and postmortem by federal officials. (Credit: Bob Nichols/U.S. Department of Agriculture)
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from article Fruit, tree
Apple trees growing in an orchard. (Photo by Charles Rondeau)
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from article Fruit, tree
Apple scab on fruit. This disease, caused by the fungus Venturia inaequalis, leads to unsightly blemishes on ripe apples. (Photo courtesy of the University of Georgia Plant Pathology Archive)
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from article Fruit, tree
Brown rot, caused by the fungus Monilinia fructicola, on a peach. (Photo by Jonas Janner Hamann, Universidade Federal de Santa Maria, Brazil)
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from article Fruit, tree
Fire blight, caused by the bacterium Erwinia amylovora, on apple fruits and leaves. (Photo courtesy of the University of Georgia Plant Pathology Archive)
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from article Fruit, tree
Blue mold (Penicillium italicum) on a rotting orange. (Photo by G. L. Barron)
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from article Belladonna
Close-up view of the belladonna plant (Atropa belladonna), showing the leaves and berries, which are toxic. (Photo courtesy of Leo Michels)
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from article Lychee
Fruit and leaves of lychee (Litchi chinensis). (Photo courtesy of Forest and Kim Starr)
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from article Physical science
An astronaut conducts a physical science experiment aboard the International Space Station involving buoyancy-driven convection and sedimentation, which as force-dependent phenomena occur differently in a microgravity environment. (Credit: NASA)
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from article Model theory
Conceptual model of a system.
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from article Model theory
Model of a regional population system.
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from article Bluegrass
Kentucky bluegrass (Poa pratensis). (Photo courtesy of Forest and Kim Starr)
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from article Sandalwood
Coast sandalwood (Santalum ellipticum) of Hawaii. (Photo courtesy of Forest and Kim Starr)
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from article Bluestem grass
Big bluestem (Andropogon gerardii). (Photo by Lynn Betts, Natural Resources Conservation Service, U.S. Department of Agriculture)
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from article Bluestem grass
Seed heads of little bluestem (Schizachyrium scoparium). (Photo by Lynn Betts, Natural Resources Conservation Service, U.S. Department of Agriculture)
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from article Sassafras
Leaves of a sassafras seedling (Sassafras albidum), Shenandoah National Park, Virginia. (Photo courtesy of J. M. Reuter, National Park Service)
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from article Flax
Flax plants (Linum usitatissimum) in bloom. (Photo by Howard F. Schwartz, Colorado State University)
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from article Flax
Flaxseeds. (Photo by Jose Hernandez, U.S. Department of Agriculture–Natural Resources Conservation Service PLANTS Database)
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from article Flax
Yellow wilted leaves of flax plants infected by Fusarium oxysporum. (Photo by J. A. Hoes, Oilseed Diseases Image Collection, Western Committee on Plant Disease, Winnipeg, Manitoba, Canada)
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from article Flax
Blighted and moldy flaxseeds. (Photo by J. A. Hoes, Oilseed Diseases Image Collection, Western Committee on Plant Disease, Winnipeg, Manitoba, Canada)
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from article Peppermint
Peppermint (Mentha piperita). (Photo by Michael Thompson, Agricultural Research Service, U.S. Department of Agriculture)
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from article Citron
Citron (Citrus medica), including cross sections of the fruit. (Photo courtesy of California Citrus Clonal Protection Program)
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from article Cabbage
Cabbage (Brassica oleracea var. capitata). (Joseph Harris Co., Inc., Rochester, New York)
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from article Lespedeza
Sericea lespedeza (Lespedeza cuneata). (Photo by Chuck Bargeron, University of Georgia; Bugwood.org)
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from article Sisal
Sisal (Agave sisalana). (Photo courtesy of Peter Lapshin)
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from article Wool
Sheep at a research facility near Dubois, Idaho. (Photo courtesy of the Agricultural Research Service, U.S. Department of Agriculture)
Image
from article Wool
Longitudinal section of a completely developed nonmedullated wool follicle, including sebaceous and sweat glands.
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from article Wool
Cuticle, cortex, and medulla of a wool fiber.
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from article Wool
Scale formation of Delaine Merino wool fibers.
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from article Wool
Fine wool staples showing distinct crimp (wavy) patterns. The length shown is the minimum for each classification.
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from article Brazil nut
Unshelled Brazil nuts (Bertholletia excelsa). (Photo courtesy of C. E. Timothy Paine)
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from article Castor plant
Seeds of the castor plant (Ricinus communis). These seeds, which are also known as castor beans, are processed to make castor oil. (Photo by Brian Prechtel, Agricultural Research Service, United States Department of Agriculture)
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from article Cowpea
Cowpea (Vigna unguiculata): pods and leaves. (Photo by Howard F. Schwartz, Colorado State University)
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from article Cowpea
Cowpea seeds, which are often called black-eyed peas. (Photo by Joseph Berger; Bugwood.org)
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from article Kumquat
Fruits and foliage of the Nagami kumquat (Fortunella margarita). (Photo by Forest and Kim Starr)
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from article Mulberry
White mulberry (Morus alba). (Photo courtesy of Forest and Kim Starr)
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from article Beech
Leaf on top of bark of American beech (Fagus grandifolia). (Photo courtesy of Robert H. Mohlenbrock, USDA–NRCS PLANTS Database)
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from article Beech
Beechnuts of the American beech (Fagus grandifolia). (Photo courtesy of Steve Hurst, USDA–NRCS PLANTS Database)
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from article Marjoram
Close-up view of marjoram (Majorana hortensis; alternatively Origanum majorana). (Photo courtesy of Forest and Kim Starr)
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from article Mustard
Black mustard (Brassica nigra). (Photo courtesy of Jennifer Anderson, USDA–NRCS PLANTS Database)
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from article Asian vegetables
A head of Chinese cabbage. (Credit: Jiang Hongyan/Shutterstock)
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from article Asian vegetables
Bok choy, also known as pak choy or Chinese mustard. (Credit: Agricultural Research Service, U.S. Department of Agriculture)
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from article Asian vegetables
Daikon (oriental winter radish) is a notable vegetable in Japan. (Credit: Franco Folini)
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from article Asian vegetables
Mung bean sprouts.
