Ecological Relationship
the study of interactions among living things and their environments
What is ecology
The ultimate source of energy for all living things on Earth
What is the Sun
organisms that prey on other heterotrophs
What are carnivores
Where the largest concentration of nitrogen is found
What is the atmosphere
the role an organism holds within its environment
what is a niche
rocks, soil, temperature, and precipitation are all examples of
What are abiotic factors
organisms that make their own food
What are producers/autotrophs
What makes up the first trophic level in all ecosystems
What are producers
The short term cycle involves photosynthesis
what is the carbon cycle
living organisms that break down nutrients by releasing digestive enzymes
what are decomposers
All of the trees, shrubs, deer, and birds that live in a forest.
What is a biological community
levels used to show how energy flows through an ecosystem
What are trophic levels
the total living mass of living matter at each trophic level
What is biomass
Two ways that water can enter the ground
What are percolation and infiltration
The exchange of matter through the biosphere
what is the biogeochemical cycle
A bird builds a nest in a tree. What is the relationship between the bird and the tree?
What is commensalism
The third level in an energy pyramid
What is secondary consumer
Cycle that is used by consumers to make proteins
nitrogen cycle
the evaporation of water from plants
what is transpiration
Put the 6 levels of organization in order from smallest to biggest.
organism, population, biological community, ecosystem, biome, biosphere
The amount of energy that is transferred between trophic levels
What is (roughly) 10%
Name for an animal that is at the top of the food web
What is an apex predator
Long term cycle consists of the weathering and erosion of rocks
What is the phosphorous cycle
The process in which bacteria pull nitrogen from the air
What is nitrogen fixation