Species Interactions
An organism that produces its own food
What is an autotroph?
How much energy is moved forward from one trophic level to the next?
What is 10%?
Organisms that break down organism matter and return nitrogen to the soil
What are decomposers?
pH below 7
What is an acid?
pH of purified water
What is 7.0?
An organism that consumes other living things for energy and nutrients
What is a heterotroph?
If there are 1500 kcal available in the autotroph level, how much energy is available to the primary consumer?
What is 150 kcal?
The process by which carbon dioxide is converted to glucose
What is photosynthesis?
pH above 7
What is a base?
The part of sea urchins that we see
Their shells
When one organism hunts and kills another for food
What is predation?
In our oceanic food web, what plant was affected when sea otters were removed?
What is kelp?
The effect of excess carbon dioxide in the atmosphere
What is global warming?
The effect of pH on sea urchins (or other calcium-shelled organisms)
What is shell damage/shell loss?
The numerical value (pH) of something that is acidic
What is less than 7?
The organism that consumes secondary consumers
What is a tertiary consumer?
Where the greatest number of organisms /biomass should be in a food pyramid
What is the base, or producer, level?
The effect of excess carbon dioxide in ocean water
What is acidification?
C6H12O6
What is glucose?
The movement of water across a membrane
What is osmosis?
A species on which other species in an ecosystem largely depend.
What is a keystone species?
Where the fewest number of organisms are in a trophic pyramid
What is the top level?
The basic elements in every living thing
What is CHONPS?
maintaining balanced internal conditions
What is homeostasis?
This organism will eat both plants and animals
What is an omnivore (or possibly a second order consumer)?