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oceans
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Published on Nov 19, 2015
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1.
oceans
the ultimate aquatic ecosystems
Photo by
allyaubry
2.
sunlight
usable sunlight penetrates only about 330ft
Photo by
drbob97
3.
open ocean
least productive of all ecosystems
Photo by
David De Lossy
4.
plankton
primary food source
Photo by
JesseClaggett
5.
ocean depths
primary food source consists of dead organisms
Photo by
gnews pics
6.
ocean threats
unfortunately there is a big list
Photo by
USFWS/Southeast
7.
threats
fertilizer runoff
industrial waste and sewage
overfishing
discarded items from boats
...just to name a few
8.
arctic ecosystem
birds, whales & seals feed on plankton
Photo by
Ablestock.com
9.
antarctic ecosystem
only continent not colonized by humans
Photo by
NASA Goddard Photo and Video
Todd LaVogue
kidacademy.org
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