21 terms

Ecosystems

vocabulary important for ecosystems
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Terms in this set (...)

Environment
all the living and nonliving things that surround you. The living things consist of people, other animals, and plants. The nonliving things consist of water, air, soil, and weather.
Ecosystem
A system formed by the interaction of a community of organisms with their physical environment
Individual
One plant or animal - one student is an individual
Population
A group made up of the same kind of individuals living in the same ecosystem - many students make up a population
Community
all the populations that live in the same place
Producers
any living thing that can make its own food energy by using sunlight, plus water and carbon dioxide to make food
Consumers
an animal that eats plants or animals in order to survive - three types - carnivores, herbivores, and omnivores.
Herbivores
animals that eat only plants or producers. Examples are horses, giraffes, squirrels, and rabbits.
Carnivores
animals that eat only other animals. Examples are bobcats, panthers, and lions.
Omnivores
animals that eat both plants and other animals. They eat producers and consumers. Examples are bears, hyenas, and humans.
Decomposers
a living thing that feeds on wastes and on the remains of dead plants and animals - they breakdown the waste into nutrients
Nutrients
substances that are taken in by living things to help them grow.
Habitat
an environment that meets the needs of a living thing.
Niche
how a living thing interacts with its habitat - the role it plays
Food Chain
the movement of food energy in a sequence of living things. It always begins with producers.
Prey
the consumers that is eaten by another consumer - they are the hunted.
Predator
the consumer that eats another consumer - they are the hunter.
Food Web
the overlapping of food chains
Energy Pyramid
shows that each level of a food chain passes on less food energy than the level before it. Most of the energy in each level is used at that level so only a little energy is passed on to the next level.
biotic factors
The living parts of an ecosystem - plants and animals
abiotic factors
The nonliving parts of an ecosystem - sunlight, air, water, soil