Intro to Enviro
__________________ _________________ is an interdisciplinary field combining natural and social sciences
environmental science
How is an ecosystem different than a community?
it is a community with abiotic (nonliving) factors
Gas changes to liquid in which water cycle step?
condensation
Humans get both nitrogen and phosphorus through....
eating plants that have nitrogen and phosphorus in them
The main source of energy for most ecosystems is...
the sun
triple points
What are the three environmental themes?
Human population and well being
Environmental quality
Natural Resources
Put the following in order from smallest to largest: population, ecosystem, community
population, community, ecosystem
double points
Carbon dioxide is added to the carbon cycle through burning fossil fuels in which step?
combustion
Phosphorus has no step in the _____________. It is mainly found in ____________
atmosphere; rocks/ soil
Give an example of tragedy of the commons....
overfishing, overusing a shared resource, etc.
Using resources at the same rate they are replaced is called
sustainability
Go again
How do autotrophs get their food?
through photosynthesis (from the sun)
Which step removes carbon dioxide from the atmosphere?
photosynthesis
N2 is converted to usable nitrogen in which step?
nitrogen fixation
double points
How do decomposers get their food?
from breaking down dead material
List a quality of a country with a high HDI (Human Development Index).
- high literacy, low population growth, good education, good healthcare, high lifespan, etc.
If a producer has 1340 J of energy, how much does the tertiary consumer have?
1.34J of energy because only 10% is passed on
PC= 134
SC= 13.4
TC=1.34
Water goes into the air through which two steps?
evaporation and transpiration
Double points
Decomposers return nitrogen to the soil during ____________ and plants can take it up during ______________.
ammonification; assimilation
How are food chains and food webs different?
Food chains show one feeding relationship and a food web show many. Food webs are more realistic