science sucks, again Flashcards
aquatic
Relating to water; living in or near water or taking place in water
atom
the smallest particle of an element; made of electrons, protons, and neutrons.
carnivore
an animal that eats other animals
consumer
an organism that must consume other organisms for nutrients
decomposers
organisms such as bacteria and fungi that break down the remains of dead plants and animals without need for internal digestion
ecosystem
a system compromising living things, non-living things, and the interactions among them
energy
the ability of a system to do work; required for changes to happen within a system
energy transfer
movement of energy from one system to another
food web
overlapping food chains with different pathways to show the flow of energy in an ecosystem
matter cycle
the movement of elements or molecules through a repeated sequence of events
nutrients
substances that provide nourishment essential for growth and the maintenance of life
organism
a self-contained living thing
producer/autotrophs
An organism that transforms energy from the Sun and uses carbon dioxide and water to
make food
terrestrial
on or of earth
trophic level
The position an organism occupies on the food web
ecological recycling
the movement and exchange of living and nonliving matter back into the production of living matter
what happens to energy as it moves from a producer to the top consumer?
most of the energy is lost
