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Population
Energy in Ecosystems
Nitrogen Cycle
Carbon Cycle
Human Impacts
100
List an example of a population that is growing exponentially.
What is humans?
100
How much energy is transferred from 1 trophic level to the next?
What is 10%?
100
What compound is nitrogen in when it is a gas?
N2
100
How are plants involved in the carbon cycle?
They take carbon dioxide out of the atmosphere by doing photosynthesis.
100
What is the biggest threat to biodiversity?
What is habitat destruction?
200
What is the difference between biotic and abiotic factors in the environment?
biotic - living abiotic - nonliving
200
Draw a food chain that shows people eating deer and deer eating grass. Label the trophic levels.
200
How is nitrogen put into the atmosphere?
Denitrifying bacteria
200
How are animals involved in the carbon cycle?
Breathe out CO2.
200
What compounds cause acid rain?
What is SO2 and NO?
300
Draw a graph that shows a population growing exponentially.
300
Example of bioaccumulation.
What is mercury in tuna or DDT in eagles?
300
What role do bacteria have in the N cycle?
Nitrogen-fixing bacteria take nitrogen out of atmosphere. Denitrifying bacteria release nitrogen into the atmosphere.
300
How do human affect the carbon cycle?
burning fossil fuels, deforestation
300
What human activities cause acid rain?
What is burning fossil fuels?
400
Draw a graph showing a population stabilizing at the carrying capacity.
400
If there are 4670 calories at the producer level of a food chain, how many calories are in the secondary consumer level?
What is 46.7?
400
Why do plants and animals need nitrogen?
to make nucleic acids and proteins
400
What is the greenhouse effect?
gasses in the atmosphere (like CO2) trap heat
400
If the waste lagoons on a hog farm get flooded, what nutrient will there be too much of in nearby rivers?
What is nitrogen?
500
What is a limiting factor?
A resource that is scarce so it will limit the population.
500
Why are there more organisms at the bottom of the food chain?
Energy is lost as you go up. It takes a lot of producers to support 1 tertiary consumer.
500
If fertilizer or animal waste is put in rivers, what can happen?
it can cause algal blooms and eutrophication
500
How are bacteria involved in the carbon cycle?
when they decompose dead organisms they release CO2
500
What is an example of an invasive species in NC?
What is kudzu?