Science Chapter 3

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Terms in this set (...)

Biotic Factor
A living part of an ecosystem.(Plants, animals, and bacteria)
Abiotic Factor
A non-living part of an ecosystem.
(Water, soil, rocks and sunshine)
Ecology
The study of ecosystems.
Ecosystem
Is made up of both living and nonliving things in an environment. It is also a home to different populations.
Habitat
Each organism in an ecosystem has its own place where it lives.
Population
Includes all members of a species in an ecosystem.
Community
includes all the populations in a certain ecosystem. (Butterflies and daisies can be part of the same community)
Biomes
A large ecosystem with its own kind of plants, animals, and soil.
Tundra
A dry, treeless biome where the ground is frozen year-round.
Taiga
A cool, forest biome of conifers. It is also the largest biome in the world
Deciduous Forest
A biome with many kinds of trees including oaks, maples, and hickories that loose their leaves each autumn.
Tropical Rain Forest
A biome that is hot and damp with large amounts of rain.
Parts of a forest
Canopy, Understory, and Floor
Grassland
A biome where the main kind of plant is grasses. (Savannah and Prairie)
Desert
A barren biome with very little rainfall.
Producers
Plants, algae, and other organisms that use energy from the sun to make their own food. They are also found at the bottom of the energy pyramid.
Consumers
An organism that cannot make its own food. (Omnivores, Carnivores, and Herbivores)
Decomposers
An organism that breaks down waste and the remains of other organisms into simpler substances. (Worms and Bacteria)
Food Chain
Where energy passes from one organism to another. (Energy flows from
Producer to Consumer to Decomposer)
Food Web
Shows how all the food chains in an ecosystem are connected.
Competition
The struggle between organisms for food, water, and other needs.
Energy Pyramid
Shows the amount of energy in an ecosystem. (Producers are found at the base)
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