A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

the study of the ocean and ocean life.

A commonly held resource for which there are no management rules.

Also known as the Milankovich Cycle, slow climate changes resulting from
changes in the tilt of the Earth’s axis and shape of the orbit (“forcing”
signifies a physical process that affects the Earth’s climate, because the
changes of the orbital shape influence the total amount of sunlight reaching
the Earth).

 In order to be labeled “organic,” a product, its producer, and the farmer must
meet the USDA’s organic standards and must be certified by a USDA-approved
food-certifying agency. Organic foods cannot be grown using synthetic
fertilizers, chemicals, or sewage sludge, cannot be genetically modified, and
cannot be irradiated. Organic meat and poultry must be fed only
organically-grown feed (without any animal byproducts) and cannot be treated
with hormones or antibiotics. Furthermore, the animals must have access to the
outdoors, and ruminants must have access to pasture (which doesn’t mean they
actually have to go outdoors and graze on pasture to be considered organic. See
also “USDA Certified Organic”.)

More Info:

Myths about Organic Food

What Does the ‘Certified Organic Labeled’ mean?

Q/A about Organic Food

More Info on National Organic Program


Complex molecules organized around skeletons of carbon atoms arranged in rings or chains; includes biomolecules, molecules synthesized by living organisms.

Fishing beyond the capacity of a population to replace itself through
natural reproduction.

Also See: Factory Ships

More Info:

An Example of Over-fishing

Overfishing basics

How Overfishing effects Biodiversity

Unsustainable Fishing

A naturally occurring, highly reactive gas comprising triatomic oxygen formed by
recombination of oxygen in the presence of ultraviolet radiation. This
naturally occurring gas builds up in the lower atmosphere as smog pollution, while in
the upper atmosphere it forms a protective layer which shields the earth and
its inhabitants from excessive exposure to damaging ultraviolet radiation.

A hole or gap in the protective layer of ozone in the upper atmosphere.

See Also: Ozone

More Info:

Ozone Hole Explained

Ozone Hole Watch

More Detailed info on Ozone Hole