News tagged with food chain

Related topics: bacteria , climate change , mercury

New York's trans-fat ban is working: study

(HealthDay) -- New York City's restriction on the use of trans fats in foods served at restaurants is helping Big Apple residents cut down on the unhealthy fat, a new study shows.

Jul 16, 2012
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NZ toxic contaminant levels halved, study shows

Blood samples taken by Massey researchers to measure the concentrations of toxic environmental contaminants, called persistent organic pollutants (or POPs), show their levels halved in the past 15 years among New Zealand's ...

Nov 21, 2013
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FDA device will screen for fake medicines overseas

U.S. health officials are making a high-tech screening device available to African authorities to help spot counterfeit malaria pills in hopes that the technology may eventually be used to combat the fake drug trade worldwide.

Apr 24, 2013
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Food chain

Food chains, also called food webs, describe the eating relationships between species within an ecosystem or a particular living place. Many types of food chains or webs are applicable depending on habitat or environmental factors.

Organisms are connected to the organisms they consume by lines representing the direction of organism or energy transfer. It also shows how the energy from the producer is given to the consumer. Typically a food chain or food web refers to a graph where only connections are recorded, and a food network or ecosystem network refers to a network where the connections are given weights representing the quantity of nutrients or energy being transferred.

Sometimes, on a food chain, each animal is separated with an arrow. If it is pointing right, it means "is eaten by" or "is consumed by".

Every single food chain known to Man begins with a type of autotroph, whether it be a plant or some kind of unicellular organism.

This text uses material from Wikipedia licensed under CC BY-SA