Living organisms
A scientist who studies organisms and their interactions within ecosystems
biologist
symbiotic relationships
An organism that relies on other organisms to obtain energy
hetertroph
The biome that exists south of the polar ice caps in the Northern Hemisphere where caribou and polar bears exist
tundra
The freshwater zone is shallow, which allows sunlight to reach the bottom
littoral
Causes an organism to respond
stimulus
When both organisms benefit in a symbiotic relationship
mutualism
An organism that can produce their own energy through sunlight or inorganic substances
autotroph
The biome that exists in North America, South America, Asia, Africa, and Australia where summers are hot and winters are cold and is teeming with bison, deer, coyotes, and snakes
The freshwater zone that is dominated by plankton
limnetic
Any abiotic or biotic factor that restricts the numbers, reproduction, or distribution of an organism
limiting factor
When one organism benefits in a symbiotic relationship and the other is unharmed
commensalism
What is a chemical substance that all organisms must obtain from the environment to sustain life?
nutrient
The biome that exists in every continent except Europe where cacti and succulents thrive and the average precipitation is 2-26 cm per year
desert
The freshwater zone that has minimal light and has colder and low in oxygen
profundal
The ability of an organism to survive when subjected to abiotic or biotic factors is called
tolerance
When one organism benefits in a symbiotic relationship and the other suffers because of it
parasitism
What is a group of interacting populations that occupy the same area at the same time
community
The biome that ranges from -54 degrees Celsius to 21 degrees Celsius where moose, beavers, deer, wolves and lynx reside
boreal forest or taiga
The marine ecosystem where the ocean meets land where organisms must be adapted to constant changes that occur daily
intertidal
List the characteristics of a living organism
Made of one or more cells
Displays organization
Grows and develops
Reproduces
Responds to stimuli
Requires energy
Maintains homeostasis
Adaptations evolve over time
What is the total mass of living matter at each trophic level- that decreases at each trophic level?
biomass
Which type of succession takes place after a forest fire
The biome that has hot summers and cold winters where black bears, frogs, snakes, squirrels, rabbits, and skunks exist along with oak, maples trees, and shrubs
temperate deciduous forest
The marine ecosystem where it is shallow enough for light to pass through
photic