What are two different organisms that do nitrogen fixation?
100
Limiting Factor
What restricts the number of individuals living in a population?
100
producers
What organisms make their own energy?
100
Biomes
What are large geographic areas that have similar climates and ecosystems?
200
sunlight, temperature, air
What are three abiotic factors
200
photosynthesis
What is the process where plants change carbon dioxide into oxygen?
200
mutualism
What is the relationship where both species benifit from each other?
200
Energy pyramid
What decribes how energy is transferred from one level to another level?
200
niche
What is the term used to discribe how an organism survives, how it obtains food and shelter, how it finds a mate and cares for its young, and how it avoids danger.
300
Rocks, organic material, water and air
What is soil composed of?
300
Nitrogen
What is found in air and used by plants and animals?
300
Carrying capacity
What is the largest number of individuals of one species that an environment can support and maintain?
300
Food Web
What is the term used to describe the feeding relationship of organisms?
300
habitate
What is the term used to describe where an organism lives?
400
Climate, types of rock, slope of the land, types of vegatation, time
What are the factors that affect soil?
400
Transpiration
How does a plant let go of water?
400
water, food, shelter, disease, natural disasters
What are factors that might stop a population's growth?
400
Consumers
What are organisms that can not make their own energy?
400
decomposers
What are worms, fungi, bacteria?
500
Is alive or has once been alive such as humus, fungi
What are biotic factors?
500
Protein and DNA
What element is the necessary ingredient for cellular health and reproduction?
500
symbiosis
What is the term used to refer to the relationship of organisms to each other?
500
Community
What is the term used to describe all the populations in an ecosystem?
500
Parasites
What is the relationship where one organism benifits but the other is harmed?