Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/27

Click to flip

27 Cards in this Set

  • Front
  • Back
the study of the interactions of living organisms with one antoher and with their environment
ecology
place where a particular population of species lives
habitat
the many different species that live together in a habitat
community
ecological system encompassing a community and all the physical aspect sof its habitat
ecosystem
physical aspects of a habitat
abiotic factors
living organisms in a habitat
biotic factors
the variety of species living within an ecosystem
biodiversity
small, fast-growing plants that are the first organisms to live in new habitat
pioneer species
succession that occurs in a newly formed habitat that has never before sustained life
primary succession
an episode of succession that occurs in areas where there has been previous growth, such as abandoned fields or forest clearing
secondary succession
the amount of organic material that the photosynthetic organisms of an ecosystem produce
primary productivity
organism that makes its own food from energy and carbon atoms in its enviornment; autotrophs
producer
organism that must obtain energy to build its molecules by consuming other organims; heterotrophs
consumer
a group of organisms that have the same source of energy; a step in food chain
trophic level
linear pathway of energy transfer in an ecosystem
food chain
organism that eats only plants or algae
herbivore
flesh-eating organism
carnivore
animal that eats both plants and animals
omnivore
organism that obtains its energy by feeding on dead organisms or wastes
detritivore
organism that causes decay
decomposer
a network of interconnected food chains in an ecosystem
food web
diagram that depicts each trophic level in an ecosystem and how much energy is stored in each trophic level
energy pyramid
the dry weight of tissue and other organic matter found in a specific ecosystem
biomass
cycle in which a substance such as carbon or water enters into an environments living reservoir where it remains for a certain period of time and is returned to nonliving reservoir
biogeochemical cycle
water found beneath Earth's surface
ground water
loss of water from a plant through its stomata
transpiration
process of combining nitrogen gas with hydrogen to form ammonia
nitrogen fixation