Any nonliving part of the environment, such as sunlight, heat, precipitation, humidity, wind or water currents, soil types, pH, and so on.
What is an abiotic factor?
100
Organism that obtains energy from eating both plants and animals.
What is an omnivore?
100
Network of feeding interactions.
What is a food web?
100
The nutrient cycle which does not go through the atmosphere - typically this nutrient is found in the lithosphere and is difficult to obtain.
What is the phosphorus cycle?
100
First producers of energy-rich compounds that are later used by other organisms - also called autotrophs
What is a primary producer?
200
The scientific study of interactions among organisms and between organisms and their physical environment.
What is ecology?
200
Organisms that is able to capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds - also called a producer. (name means "Self" "Energy")
What is an autotroph?
200
show the relative amount of energy available at each trophic level of a food chain or food web.
What is a pyramid of energy?
200
Process in which elements, chemical compounds, and other forms of matter are passed from one organism to another.
What is a biogeochemical cycle?
200
Process in which chemical energy is used to produce carbohydrates.
What is chemosynthesis?
300
A group of ecosystems that share similar climates and typical organisms.
What is a biome?
300
Organism that obtains food by consuming other living things; also called a consumer
What is a heterotroph?
300
each step in a food chain or food web
What is a trophic level?
300
process by which bacteria convert nitrates (the usable nitrogen) into nitrogen gas (the unusable nitrogen).
What is denitrification?
300
Consists of all life on earth and all parts of the Earth in which life exists, including land, water, and the atmosphere.
What is the biosphere?
400
The three ecological methods
What are observation, experimentation, and modeling.
400
Organism that breaks down and obtains energy from dead organic matter.
What is a decomposer?
400
The three different types of ecological pyramids.
What are pyramids of biomass, energy, and numbers?
400
Chemical substance that an organism needs to sustain life.
What is a nutrient?
400
a diverse group of small, swimming animals that feed on marine algae.
What are zooplankton?
500
The 7 levels of organization from largest to smallest.
What are Biosphere, Biome, Ecosystem, Community, Populations, Species, Individual.
500
The formula for photosynthesis.
What is Carbon Dioxide + Water + Sunlight --> Carbohydrates + Oxygen
500
in some aquatic food chains, primary producers are a mixture of floating algae called this and attached algae.
What are phytoplankton?
500
Three processes that release Carbon into the atmosphere.
What are burning fossil fuels, respiration, and volcanic activity?
500
process of converting nitrogen gas (the unusable nitrogen) into nitrogen compounds that plants can absorb and use.