Human Impact
How does urbanization impact biodiversity?
decreases it (through habitat loss)
What is the maximum number of individuals a habitat can support over time?
carrying capacity
how much energy is transferred from one trophic level to the next?
10%
Bonus:
What percentage of producer's energy do secondary consumers receive?
How do animals get their carbon and nitrogen?
eating plants (or eating other consumers )
This type of organism is the glue that holds the entire ecosystem together. Without it, the who ecosystem would fall apart
keystone species
This type of organism decreases biodiversity by out-competing native species
invasive species
What can an ecosystem survive without?
consumers
What kind of organisms should have the most biomass?
producers
BONUS: Why?
Explain the role of bacteria and fungi in the ecosystem
decomposition - return nutrients to the soil
(bacteria - fix nitrogen gas into usable forms)
You are using a microscope with a 20x ocular lens. You are currently using the low-power lens. What is the total magnification?
200x
Which two pollutants cause acid rain?
nitrous oxide and sulfur dioxide
(nitric acid and sulfuric acid)
Name four density-dependent factors that can occur when a population gets too large.
predation
disease
competition (intraspecific)
overcrowding stress
In the direction of energy transfer (from the organism getting eaten to the organism doing the eating)
what form of nitrogen is usable by plants?
nitrates
In which process do some bacteria take nitrates and turn them back into nitrogen gas?
denitrification
provide three examples of renewable resources and three examples of nonrenewable resources
renewable - wind, solar, hydroelectric, geothermal, biomass
nonrenewable - oil, natural gas, coal, nuclear energy
describe mutualism, Commensalism, and parasitism
m - both benefit
c - on benefits, one is unaffected
p - one benefits and one is harmed
BONUS: provide one example of each
Which trophic level would be most severely impacted by biological accumulation?
the highest trophic level
Explain photosynthesis's role in the carbon cycle
photosynthesis takes CO2 and turns it into organic carbohydrates
BONUS:
what is the photosynthesis equation?
How can two different species live in the same habitat?
different niche
Explain how deforestation results in climate change.
deforestation destroys trees, which decreases the amount of photosynthesis that can be performed. this increases the amount of CO2 in the atmosphere which causes global warming which causes climate change
What kind of species live in stable environments and typically follow a type one survivorship curve?
K-selective
Which of these organisms are capable of harnessing energy from inorganic chemical compounds to make carbohydrates?
chemosynthesizers
Summarize the water cycle
Use the following words:
precipitation, condensation, evaporation, runoff, groundwater, sublimation, transpiration
water turns to gas three ways
liquid to gas is evaporation, solid to gas is sublimation, directly from plant leaves to gas is transpiration.
Then water condensates (gas to liquid) and falls back down to earth (precipitation)
It will either land in the ocean, hit land and runoff into waterways, or soak into the ground and become groundwater
How does biodiversity impact ecosystem stability?
more resilient
more stable
less vulnerable