BIO 182 MODULE 5 WITH
VERIFIED ANSWERS GRADED
A+ 2026 UPDATE!!
Abiotic Factors - answer-Non-living chemical and physical parts of the environment
(e.g., sunlight, temperature, wind, water, soil).
Biotic Factors - answer-Any living component that affects another organism (e.g.,
predators, prey, parasites, competitors).
Biomass - answer-The total mass of living organisms in a given area or ecosystem at a
given time.
Trophic Level - answer-A level in the food chain, defined by how many steps an organism
is from the primary source of energy.
Primary Producer - answer-Organisms (like plants/algae) that convert solar energy into
chemical energy via photosynthesis; the base of the food web.
Primary Consumer - answer-An organism (herbivore) that eats primary producers.
10% Rule - answer-The ecological principle that only about 10% of energy is transferred
from one trophic level to the next (90% is lost as heat/metabolism).
Second Law of Thermodynamics - answer-States that energy transfer is inefficient;
energy is lost as heat (entropy) during every transfer, explaining why food chains are
short.
Keystone Species - answer-A species that has a disproportionately large effect on its
ecosystem relative to its abundance (e.g., removing it causes ecosystem collapse).
VERIFIED ANSWERS GRADED
A+ 2026 UPDATE!!
Abiotic Factors - answer-Non-living chemical and physical parts of the environment
(e.g., sunlight, temperature, wind, water, soil).
Biotic Factors - answer-Any living component that affects another organism (e.g.,
predators, prey, parasites, competitors).
Biomass - answer-The total mass of living organisms in a given area or ecosystem at a
given time.
Trophic Level - answer-A level in the food chain, defined by how many steps an organism
is from the primary source of energy.
Primary Producer - answer-Organisms (like plants/algae) that convert solar energy into
chemical energy via photosynthesis; the base of the food web.
Primary Consumer - answer-An organism (herbivore) that eats primary producers.
10% Rule - answer-The ecological principle that only about 10% of energy is transferred
from one trophic level to the next (90% is lost as heat/metabolism).
Second Law of Thermodynamics - answer-States that energy transfer is inefficient;
energy is lost as heat (entropy) during every transfer, explaining why food chains are
short.
Keystone Species - answer-A species that has a disproportionately large effect on its
ecosystem relative to its abundance (e.g., removing it causes ecosystem collapse).
