Capture energy from sunlight and use that energy to produce their own food
Autotrophs
A series of steps in which organisms transfer energy by eating and being eaten is called what
Food chain
The process when organisms use chemical energy to produce carbohydrates is called
Chemosynthesis
Feed on plants and animal remains and other dead matter
Detritivores
A group of ecosystems that have the same climate and similar dominate communities is what
Biome
A group of organisms so similar to one another that they can breed and produce fertile offspring
Species
The study of interactions among organisms and their environment, or surroundings
Ecology
Assemblages of different populations that live together in a defined area
Community
Process where autotrophs use light energy to power chemical reactions that convert carbon dioxide and water into oxygen and energy rich carbohydrates
Photosynthesis
Heterotrophs that eat only animals
Carnivores
A network of a complex interactions that links all food chains in an ecosystem together is what
Food web
Each step in a food chain or food web
Trophic level
The total amount of living tissue within a given trophic level
Biomass
Heterotrophs that eat plants and animals
Omnivores
Rely on other organisms for their energy and food supply
Heterotrophs
Heterotrophs that obtain energy by only eating plants
Herbivores
The combined portions of the planet in which all life exists
Biosphere
Collections of all the organisms that live in a particular place together with their nonliving or physical environment
Ecosystem
groups of individuals that belong to the same species and live in the same area
Population
Break down organic matter
Decomposers
Diagram that shows the relative amounts of energy or matter contained within each trophic level in a food web or food chain
Ecological pyramid
The organism within the first level of the food chain
Producer
The lowest level of environmental complexity that includes living and nonliving factors?
Ecosystem
The percentage of energy that is available to the next trophic level in a food chain is
10%
In the process of photosynthesis producers release this into the atmosphere
Oxygen
Which organisms help convert gaseous nitrogen into ammonia in the nitrogen cycle
Bacteria
Model that shows the number or organisms at each trophic level in an ecosystem
Pyramid of numbers
What provides most of the energy in ecosystems
Producers
Almost all autotrophs get their energy from what
Sunlight
What can be both primary and secondary consumers
Omnivores
What are herbivores
Primary consumers
What best describes biodiversity
The number of species in an ecosystem
What do all biotic and abiotic factors in a given area make up
An ecosystem
Bacteria are important in the nitrogen cycle because they
Help convert nitrogen into a form that organisms can use
