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Properties of Water
Biogeochemical Cycles
Food Webs and Energy Transfer
Populations and Changes
Biodiversity and Human Impact
100
This is the chemical composition of water.
What is H2O?
100
A cycle that doesn't involve the atmosphere, only soil and organisms.
What is the phosphorus cycle?
100
An organism that can make its own food.
What is a producer?
100
The specific physical location in which a population lives.
What is habitat?
100
A resource that cannot be used up or can replenish itself as quickly as it is used.
What is a renewable resource?
200
These bonds are responsible for most of the properties of water. They connect a hydrogen atom and an oxygen atom from two separate molecules of water.
What are hydrogen bonds?
200
A way that carbon exits the atmosphere and enters a food web.
What is photosynthesis?
200
The original source of all energy on Earth.
What is the sun?
200
The maximum population that an ecosystem can support.
What is a carrying capacity?
200
Things that can cause a decrease in a population at carrying capacity?
What is overcrowding/hunted by predators/etc. (Ms. Payne's discretion)
300
This property of water results in water cooling the atmosphere around it.
What is high specific heat?
300
The only way that nitrogen can enter the food web.
What is nitrogen fixation?
300
A consumer that only eats producers.
What is a primary consumer?
300
Succession that happens when soil is still present.
What is secondary succession?
300
A species that is not native to an area and causes harm.
What is an invasive species?
400
When water from plants is lost to the atmosphere.
What is transpiration?
400
The conversion of nitrites, nitrates, or nitrous oxides into nitrogen gas by bacteria
What is denitrification?
400
An organism that receives energy from every organism in its environment.
What is a decomposer?
400
Species that colonize a site of succession first and prepare it for those that will come later.
What are pioneer species?
400
Things caused by a loss of biodiversity
What is an unstable, unhealthy ecosystem?
500
The reason why water is polar.
What is asymmetrical charge/asymmetrical electron sharing?
500
This process results in carbon dioxide leaving living things and entering the atmosphere.
What is respiration/cellular respiration?
500
In a trophic pyramid, what percentage of energy available at the first level is still available by the third level? (Two steps up)
What is 1%?
500
Some thing that prevents a population from growing in size.
What is a limiting factor?
500
A species that is absolutely essential in shaping its community.
What is a keystone species?