SCI Tech Marine Ecosystems

The marine ecosystem providing the most habitat and with the MOST diversity from these choices is:

• polar ice

• rocky shore

• coral reef

• intertidal area

True of False: The temperature of the ocean water decreases as the depth of the water increases.

• True
• False

The __________ zone is the place where the ocean meets the land. It is normally covered by water, but for periods of the day it may be exposed to the air.

• intertidal

• neritic

• oceanic

• benthic

The deeper parts of the benthic zone do not get any _________.

• sunlight

• food

• life

• marine snow

Through evaporation, the ocean provides most of the water that makes up Earth's _____________.

• precipitation
• condensation
• evaporation

Where are most coral reefs found?

• warm, shallow areas of the neritic zone
• deepest, dark areas of the benthic zone
• deep water of the open ocean

Which ecosystem is this? : These ecosystems are the areas of shorelines that are left uncovered during low tide but which are underwater during high tide; they are usually rocky, but in tropical areas they may be sandy; organisms that live here need to adapt to the waves, the sun, and both marine and land predators

• Deep sea

• Open ocean

• Intertidal zone

• Coral reefs

Which ecosystem is this? : These ecosystems occur where rivers connect with oceans; the flows of nutrients carried by the rivers make these ecosystems some of the most nutrient-rich and bio-productive areas on Earth; many species live here, and many more will come here each year to breed and raise their young

• Wetlands

• Open ocean

• Intertidal zone

• Estuaries

The base of the food web in open ocean ecosystems is:

• Mangrove trees

• Phytoplankton

• Sea grass

• Zooplankton

• Arby's Beef and Cheddar

In addition to all the abiotic factors in a marine ecosystem, there are many biotic ones also. Which of these is a biotic factor of a marine ecosystem?

• air

• algae

• sand

• water