Ecosystems & Environmental Science
An ecosystem is a location on Earth that includes which type of components? (hint: bio and non bio)
abiotic and biotic
Which biome is characterized by presence of permafrost?
tundra
the direction of the arrow in a food chain/web represents what?
flow of energy to the organism/the organism that gets eaten
What happens to energy as it moves up trophic levels?
it decreases
True or false: high PP leads to lots of food and shelter for animals
true
Sustainability refers to the preservation of ____________.
the future
In which biome would you expect to find an area with an annual average temperature of -10 degree F and 6 to 10 in of precipitation?
tundra
A secondary consumer can be a carnivore and what else?
omnivore
What is the primary source of energy for all trophic levels?
sun/sunlight
Some of the energy in a plant is lost through what when plants take in sunlight?
respiration
Place the following ecology levels in order smallest to largest:
ecosystem, biosphere, community, population, organism
organism, population, community, ecosystem, biosphere
Terrestrial biomes are defined by which variables?
temperature and precipitation (also accept climate and plants)
Which of the following indicates a healthy environment: positive or negative feedback loop?
negative feedback loop
which trophic level experiences the highest loss of energy?
tertiary consumers
How much sunlight is captured through photosynthesis?
1%
Which law of thermodynamics relates to energy loss within an ecosystem?
second law of thermodynamics
Which biome has warm temperatures, high precipitation, and little temp variation?
tropical rianforest
What is the term which describes a series of events in an ecosystem where a top predator affects lower trophic levels?
trophic cascade
in an ecosystem, which trophic level has the highest population?
producers
What is the formula for calculating NPP?
NPP = GPP - RL
A positive feedback loop occurs when a system enters a ______ state of equilibrium
new
In which biome would you expect to find an are with an average temp of 50 degrees F and 200 cm of precipitation annually?
temperate rainforest
All plants use up some energy they generate by doing cellular respiration. What is this called?
respiration loss
what limits coexistence and leads to competition between organisms?
limited resources
What is the amount of energy called that producers in an ecosystem capture?
GPP