Nutrient Cycles &
Energy Flow
Energy Flow
Biodiversity
Climate Change
Community Interactions
Random
100
What is the major reservoir of Nitrogen on Earth?
The atmosphere
100
What is species richness?
The number of different species in a habitat.
100
Which greenhouse gas is most abundant?
Carbon dioxide
100
A ____ is a species that has a disproportionately large impact on their community or ecosystem relative to their abundance.
A keystone species
100
True or false?
The process natural selection is the only process that can produce adaptations.
True
200
Imagine that you ate an chicken drumstick. The chicken was fed caterpillars as it's food source, and those caterpillars were fed cabbage as their food source. What was your trophic level?
Tertiary consumer
200
The threat to biodiversity that comes from removing so many individuals from a population that the population collapses is called?
Overharvesting / overexploitation
200
Which greenhouse gas is most potent?
Fluorinated gases
200
The evolutionary process where competing species use different resources, habitats, or times of day to avoid direct competition and coexist is called:
Niche differentiation / resource partitioning
200
What are living organisms that are used to combat invasive species called?
Biological controls
300
The increase in concentration of some chemicals as you move higher up the food web, such a mercury in fish, is called:
Biomagnification
300
The edge effect, patch isolation, and island effect are all outcomes of which threat to biodiversity?
Habitat Fragmentation
300
Atmospheric carbon dioxide levels fluctuate annually in a distinct "sawtooth" pattern primarily because of ___.
Photosynthesis
300
When more than one species plays the same role in an ecosystem, such having more than one apex predator, they are referred to as:
Functionally redundant
300
Tyrone Hayes is a frog expert and professor of biology at the UC Berkeley. His work with the pesticide ____ indicated that small levels of the chemical severly disdurpted the reporoduvetive systems and fertility of frogs.
Atrazine
400
Where does the carbon plants use for photosynthesis come from?
Atmospheric carbon dioxide
400
The Svalbard Vault in Norway is nicknamed the “doomsday vault” because of its remote and protected location. What is stored in it?
Seeds
400
Ocean acidification occurs when carbon dioxide mixes with water and produces which acid?
Carbonic acid
400
This type of mimicry occurs when two or more harmful or unpalatable species evolve to resemble one another.
Müllerian mimicry
400
Which type of succession would occur after a serious flood or wildfire?
Secondary sucession
500
What is NPP?
Hint: not what the letters stand for, but what NPP represents ecologically.
A measure of plant biomass
NPP = GPP - respiration
500
Extremely species rich areas are called _____ _____ because even though they cover just 2.4% of Earth's land surface but are home to more than 50% of the world’s endemic plant species and 43% of endemic land vertebrates.
Biodiversity hotspots
500
In climate science, critical thresholds in the Earth system that, when exceeded, trigger rapid, self-sustaining, and largely irreversible changes are referred to as:
Tipping points
500
The ___ niche is the entire theoretical range of conditions and resources a species could occupy without pressures from other organisms. The ___ niche is the actual, restricted space and resources a species does occupy in reality.
Fundamental niche and realized niche
500
What are two examples of provisioning ecosystem services?
Water, food, textiles, timber, medicine