The document summarizes key aspects of ocean ecosystems, including average ocean temperatures, biotic and abiotic factors, food webs consisting of producers, primary consumers, secondary consumers and tertiary consumers, decomposers, examples of each, and water, carbon and nitrogen cycles. It also notes that pollution is a major environmental issue impacting over half the global ocean and threatening marine animals.

1. The average temperature is around 74 degrees
Fahrenheit. Oceans do have seasons but it’s mostly warm
year round. They do not have precipitation because it’s
under water. It’s location are in the tropical latitudes.
Abiotic factors: temperature of water, current strength,
dissolved minerals.
Biotic factors: fish mollusks, living coral, echinoderms.

2. Producer: an autotrophic organism capable of producing
complex organic compounds from simple inorganic
molecules through the process of photosynthesis.
Primary consumer: an animal that feeds on plants.
Secondary consumer: an organism that largely feeds on
primary consumers.
Tertiary consumer: an carnivore at the top of the food
chain that feeds on other carnivores.

3.  Decomposer: an organism, usually a bacteria or
fungus, that breaks down the cells of dead
plants and animals.
 Producers include algae, sea plants, plankton.
Primary consumers are mostly small fish,
molluscs, coral polyps, clams and sponges,
which are eaten by secondary consumers like
eels, crabs, starfish and octopus. Some
decomposers are fan worms and flat eels.

5.  Water cycle: the circulation of the earth’s water, in
which water evaporates into the atmosphere, where
it condenses and falls as rain or snow.
 Carbon cycle, the circulation of carbon between
living organism and their surroundings. Carbon
dioxide from atmosphere is synthesized by plants
into plant tissue, which is ingested and metabolized
by animals and converted to carbon dioxide again
during respiration and decay.
nitrogen cycle: the continuous sequence of events by
which atmospheric nitrogen and nitrogenous
compound in soil are converted, as by nitrfication
and nitrogen fixation, into substances that can be
utilized by green plants and denitrification.

9.  An evironmental issue is pollution. It’s a major
problem over half the global ocean. It threatens
animals and their homes